cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Augmenting Emotional Requirements with Emotion Markers and Emotion Prototypes
Creators: name: Callele, David
name: Neufeld, Eric
name: Schneider, Kevin
Publisher: name: IEEE
Year: 2009

description: A production-phase weakness in emotional requirements was identified and resolved during a follow-up study. The definition of emotional requirements was extended to include emotion prototypes and emotion markers. Improved practices for identifying media assets for emotional requirements were developed, enhancing their utility to the production process.
Trust Evaluation Based Dynamic Task Allocation Framework for Multi Mobile Robots System
Creators: name: Rishwaraj Gengarajoo
Publisher: name: Monash University
Year: 2016
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: The application of multirobot system (MRS) is becoming increasingly popular as it allows multiple robots within the same system to pool resources together to achieve common goals or objectives. A vital part of the MRS is the teamwork and cooperation through the sharing of information or resources among the robots to optimize their efforts in accomplishing given mission objectives. A critical part of the teamwork effort is the ability to trust each other when executing any task to ensure efficient and successful cooperation. In this PhD research, the credibility or the trustworthiness of a robot is the main focus of this study. More specifically, this research presents the development of a trust evaluation model and a trust based control system framework for dynamic task allocation in MRS.
 The developed trust evaluation model and the integrated trust based control system framework allows a robot to give a task to and/or receiving a task from trustworthy robots as well as dynamically form centralized teams of trustworthy robots only. The trust evaluation model is developed using the theory of temporal difference learning, incorporated with a novel, modified concept of Markov games and integrated with an original heuristic computational model to estimate trustworthiness.
 Simulation experiments are conducted to study and analyze the performance of the developed model against some of the recently reported models in the literature. The simulation experiments indicate that the developed model performs better than the literature models. In terms of accuracy, the developed model scored the lowest RMSD compared the literature models, indicating higher accuracy. The developed model is also 17.8% more efficient in estimating trustworthiness than the best model from the literature. The integrated trust model based Control System also proved to be able to distinguish between trustworthy and untrustworthy robots effectively when accepting a task and forms preferred centralized coalitions only with trustworthy robots. The trust evaluation model and the control system is subsequently implemented in real world MRS experiments. The experiments proved that the robots with the embedded trust evaluation model and control system are able to identify trustworthy robots during task allocation and dynamically form teams of trustworthy robots in real time to complete the given task.
WZ plus missing-E_T signal from gaugino pair production at LHC7
Creators: name: Baer, Howard
name: Barger, Vernon
name: Kraml, Sabine
name: Lessa, Andre
name: Sreethawong, Warintorn
name: Tata, Xerxes
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: LHC searches for supersymmetry currently focus on strongly produced sparticles, which are copiously produced if gluinos and squarks have masses of a few hundred GeV. However, in supersymmetric models with heavy scalars, as favored by the decoupling solution to the SUSY flavor and CP problems, and m_{\tg}> 500 GeV as indicated by recent LHC results, chargino--neutralino (\tw_1^\pm\tz_2) production is the dominant cross section for m_{\tw_1} \sim m_{\tz_2} < m_{\tg}/3 at LHC with \sqrt{s}=7 TeV (LHC7). Furthermore, if m_{\tz_1}+m_Z \lesssim m_{\tz_2}\lesssim m_{\tz_1}+m_h, then \tz_2 dominantly decays via \tz_2\to\tz_1 Z, while \tw_1 decays via \tw_1\to \tz_1 W. We investigate the LHC7 reach in the WZ + MET channel (for both leptonic and hadronic decays of the W boson) in models with and without the assumption of gaugino mass universality. In the case of the mSUGRA/CMSSM model with heavy squark masses, the LHC7 discovery reach in the WZ+MET channel becomes competetive with the reach in the canonical MET + jets channel for integrated luminosities \sim 30 fb^-1. We also present the LHC7 reach for a simplified model with arbitrary m_{\tz_1} and m_{\tw_1} \sim m_{\tz_2}. Here, we find a reach of up to m_{\tw_1}\sim 200 (250) GeV for 10 (30) fb^-1.
description: 15 pages including 9 .eps figures
t \bar{t} W production and decay at NLO
Creators: name: Campbell, John M.
name: Ellis, R. Keith
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present results for the production of a top pair in association with a W-boson at next-to-leading order. We have implemented this process into the parton-level integrator MCFM including the decays of both the top quarks and the W-bosons with full spin correlations. Although the cross section for this process is small, it is a Standard Model source of same-sign lepton events that must be accounted for in many new physics searches. For a particular analysis of same-sign lepton events in which b-quarks are also present, we investigate the effect of the NLO corrections as a function of the signal region cuts.
description: 10 pages, 7 figures
Enhancing Sustainability in the Agricultural Sector Amid COVID-19: An Implication of the Transactional Theory
Creators: name: Mangi, Mariam
name: Anwar, Rana Salman
name: Khan, Shabeer
name: Rehman, Mohd Ziaur
name: Bhatti, Ishaq
name: Alonazi, Wadi B
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 300210
subject: Sustainable agricultural development

description: COVID-19 impacted lives and business activities across all sectors of the economy, and farmers were no exception. Utilizing the lens of the transactional theory of stress and coping, the present study explores the stressors among small-scale farmers and the strategies they adopted for farm management during the pandemic. This study follows qualitative research design principles and collects the data of farmers from Pakistan on their lived experiences via in-depth interviews. We selected the farmers based on the purposive criterion sampling method, selecting farmers whose farm management practices were affected by the pandemic. The findings suggest that the pandemic created stress among farmers through internal and external factors. The low income of farmers and decline in their yield appeared as internal factors, and hindrances in utilizing resources, strict lockdown measures, worsening supply chain, and market conditions were major external factors impacting farmers emotionally and economically. Farmers utilized their available resources to cope with these factors, i.e., family labor, on-farm labor accommodation, and self-transportation. Nonetheless, farmers demanded the government, fellow farmers, and wholesalers to build a better system to cope with any crisis such as COVID-19. This study provides two primary contributions: First, it provides theoretical contributions to the transactional model of farmers’ stress and coping during COVID-19, taking evidence from farmers in the agricultural sector. Second, it provides a comprehensive framework through which researchers, practitioners, consultants, and government authorities can build future scholarship and develop strategies to enhance sustainability and cope with future pandemics.
The Dark Patterns of Proxemic Sensing
Creators: name: Boring, S.
name: Greenberg, S.
name: Vermeulen, J.
name: Dostal, J.
name: Marquardt, N.
Publisher: name: IEEE
Year: 2014

description: To be accepted and trusted by the public, proxemic sensing systems must respect people's conception of physical space, make it easy to opt in or out, and benefit users as well as advertisers and other vendors.
Bug introducing changes: A case study with Android
Creators: name: Asaduzzaman, M.
name: Bullock, M.C.
name: Roy, C.K.
name: Schneider, K.A.
Publisher: name: IEEE
Year: 2012

description: Changes, a rather inevitable part of software development can cause maintenance implications if they introduce bugs into the system. By isolating and characterizing these bug introducing changes it is possible to uncover potential risky source code entities or issues that produce bugs. In this paper, we mine the bug introducing changes in the Android platform by mapping bug reports to the changes that introduced the bugs. We then use the change information to look for both potential problematic parts and dynamics in development that can cause maintenance implications. We believe that the results of our study can help better manage Android software development.
Axioms for Rational Reinforcement Learning
Creators: name: Sunehag, Peter
name: Hutter, Marcus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We provide a formal, simple and intuitive theory of rational decision making including sequential decisions that affect the environment. The theory has a geometric flavor, which makes the arguments easy to visualize and understand. Our theory is for complete decision makers, which means that they have a complete set of preferences. Our main result shows that a complete rational decision maker implicitly has a probabilistic model of the environment. We have a countable version of this result that brings light on the issue of countable vs finite additivity by showing how it depends on the geometry of the space which we have preferences over. This is achieved through fruitfully connecting rationality with the Hahn-Banach Theorem. The theory presented here can be viewed as a formalization and extension of the betting odds approach to probability of Ramsey and De Finetti.
description: 16 LaTeX pages
Dispersion of changes in cloned and non-cloned code
Creators: name: Mondal, M.
name: Roy, C.K.
name: Schneider, K.A.
Publisher: name: IEEE
Year: 2012

description: Currently, the impacts of clones in software maintenance activities are being investigated by different researchers in different ways. Comparative stability analysis of cloned and non-cloned regions of a subject system is a well-known way of measuring the impacts where the hypothesis is that, the more a region is stable the less it is harmful for maintenance. Each of the existing stability measurement methods lacks to address one important characteristic, dispersion, of the changes happening in the cloned and non-cloned regions of software systems. Change dispersion of a particular region quantifies the extent to which the changes are scattered over that region. The intuition is that, more dispersed changes require more efforts to be spent in the maintenance phase. Measurement of Dispersion requires the extraction of method genealogies. In this paper, we have measured the dispersions of changes in cloned and non-cloned regions of several subject systems using a concurrent and robust framework for method genealogy extraction. We implemented the framework on Actor Architecture platform which facilitates coarse grained parallellism with asynchronous message passing capabilities. Our experimental results on 12 open-source subject systems written in three different programming languages (Java, C and C#) using two clone detection tools suggest that, the changes in cloned regions are more dispersed than the changes in non-cloned regions. Also, Type-3 clones exhibit more dispersion as compared to the Type-1 and Type-2 clones. The subject systems written in Java and C show higher dispersions as well as increased maintenance efforts as compared to the subject systems written in C#.
Improving the detection accuracy of evolutionary coupling
Creators: name: Mondal, M.
name: Roy, C.K.
name: Schneider, K.A.
Publisher: name: IEEE
Year: 2013

description: If two or more program entities (e.g., files, classes, methods) co-change frequently during software evolution, these entities are said to have evolutionary coupling. The entities that frequently co-change (i.e., exhibit evolutionary coupling) are likely to have logical coupling (or dependencies) among them. Association rules and two related measurements, Support and Confidence, have been used to predict whether two or more co-changing entities are logically coupled. In this paper, we propose and investigate a new measurement, Significance, that has the potential to improve the detection accuracy of association rule mining techniques. Our preliminary investigation on four open-source subject systems implies that our proposed measurement is capable of extracting coupling relationships even from infrequently co-changed entity sets that might seem insignificant while considering only Support and Confidence. Our proposed measurement, Significance (in association with Support and Confidence), has the potential to predict logical coupling with higher precision and recall.
Growth of Early Supermassive Black Holes and the High-Redshift Eddington Ratio Distribution
Creators: name: DeGraf, Colin
name: Di Matteo, Tiziana
name: Khandai, Nishikanta
name: Croft, Rupert
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using a new large-scale (~ 0.75 Gpc)^3 hydrodynamic cosmological simulation we investigate the growth rate of supermassive black holes in the early universe (z > 4.75). Remarkably, we find a clear peak in the typical Eddington ratio at black hole masses of 4-8 * 10^7 solar masses (typically found in halos of ~7 * 10^11 to 10^12 solar masses), independent of redshift and indicative that most of BH growth occurs in the cold-flow dominated regime. Black hole growth is by and large regulated by the evolution of gas density. The typical Eddington ratio at a given mass scales simply as cosmological density (1+z)^3 and the peak is caused by the competition between increased gas density available in more massive hosts, and a decrease due to strong AGN feedback that deprives the black hole of sufficient gas to fuel further rapid growth in the high mass end. In addition to evolution in the mean Eddington ratio, we show that the distribution of Eddington ratio among both mass-selected and luminosity-selected samples is approximately log-normal. We combine these findings into a single log-normal fitting formula for the distribution of Eddington ratios as a function of (M_BH,z). This formula can be used in analytic and semi analytic models for evolving black hole populations, predicting black hole masses of observed quasars, and, in conjunction with the observed distribution of Eddington ratios, can be used to constrain the black hole mass function.
description: 6 pages, 5 figures
Improving Digital Handoff Using the Space Above the Table
Creators: name: Sutcliffe, S. W. T.
name: Ivkovic, Z.
name: Flatla, D. R.
name: Pavlovych, A.
name: Stavness, I.
name: Gutwin, C.
Publisher: name: ACM
Year: 2013

description: Object handoff - that is, passing an object or tool to another person - is an extremely common activity in collaborative tabletop work. On digital tables, object handoff is typically accomplished by sliding them on the table surface - but surface-only interactions can be slow and error-prone, particularly when there are multiple people carrying out multiple handoffs. An alternative approach is to use the space above the table for object handoff; this provides more room to move, but requires above-surface tracking. We have developed two above-the-surface handoff techniques that use simple and inexpensive tracking: a force-field technique that uses a depth camera to determine hand proximity, and an electromagnetic-field technique called ElectroTouch that provides positive indication when people touch hands over the table. We compared the new techniques to three kinds of surface-only handoff (sliding, flicking, and surface-only Force-Fields). The study showed that the above-surface techniques significantly improved both speed and accuracy, and that ElectroTouch was the best technique overall. This work provides designers with practical new techniques for substantially increasing performance and interaction richness on digital tables.
Maximizing Throughput in Multi-Function Robotic Cells
Creators: name: Foumani, Mehdi
Publisher: name: Monash University
Year: 2016
Subjects: Uncategorized

description: Multi-functionality of robots is almost a new objective of interest, both theoretically and in practice. Recent work has shown the robot is able not only to act as a material handling device but also to inspect the part in transit between machines. Such a kind of robot and the cell in which it is applied are called the Multi-Function Robot (MFR) and the Multi-Function Robotic Cell (MFRC), respectively. Also, the inspection scenario under this condition is named in-line inspection scenario. Considering a MFRC, this thesis contains two main contributions. Firstly, we limit our study to a MFR which only measures the thickness of the part and records results in an independent computer. Accordingly, the processing route of the part is fixed although the MFR performs the inspection process of the part. Under this condition, we find a deterministic model for minimizing the cycle time. Secondly, we consider the user interface computer can be used to modify the processing route of each part based on its inspection result. This means that the number of processing of the part by the production machine is a random variable depending on the inspection result. Consequently, we should develop a stochastic model for minimizing the partial cycle time. For this case, we also focus on two other inspection scenarios in addition to in-line one: post-process and in-process. For the first scenario, the inspection process is performed by an independent inspection machine, while parts are inspected in the production machine using multiple sensors for the second scenario. Since the inspection can be performed by a MFR, we extend results for the in-line scenario. Furthermore, it is shown how a robotic cell with post-process (or in-process) inspection scenario can be converted into a robotic cell with in-line inspection scenario. We propose an analytical method for minimizing cycle time (or expected cycle time) of cells under the aforementioned conditions. Accordingly, the thesis is organized as follows: Chapters 1 and 2 give a general overview of robotic cells, and then Chapters 3-6 present four published papers related to the situation in which the processing route of the part is fixed. The first paper is related to the origin of MFRCs. Following that, second and third papers are related to small- and large-scale MFRCs which only record the inspection results. Finally, the forth paper is related to the operational flexibility in MFRCs. Note that Chapters 3-6 are precedents for Chapters 7-9 where the processing route of each part is modified based on its inspection results. We present two papers in Chapters 7 and 8 to cover robotic cells with post-process and in-process inspection scenarios. Then, in Chapter 9, we show how cells with in-process and post-process inspection scenarios can be converted into a MFRC, which has an in-line inspection scenario. Finally, Chapter 10 presents concluding remarks and some suggestions for MFRCs operating in a dynamic environment.
Induced magnetism in transition metal intercalated graphitic systems
Creators: name: Kaloni, T. P.
name: Kahaly, M. Upadhyay
name: Schwingenschlögl, U.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the structure, chemical bonding, electronic properties, and magnetic behavior of a three-dimensional graphitic network in aba and aaa stacking with intercalated transition metal atoms (Mn, Fe, Co, Ni, and Cu). Using density functional theory, we find induced spin-polarization of the C atoms both when the graphene sheets are aba stacked (forming graphite) and aaa stacked (resembling bi-layer graphene). The magnetic moment induced by Mn, Fe, and Co turns out to vary from 1.38 μB to 4.10 μB, whereas intercalation of Ni and Cu does not lead to a magnetic state. The selective induction of spin-polarization can be utilized in spintronic and nanoelectronic applications.
description: 13 pages, 3 figures, 1 table
ผลของค่าความเป็นกรด-ด่างและปริมาณน้ําเสียสังเคราะห์ที่มีต่อประสิทธิภาพการดูดซับน้ํามันและไขมันด้วยดอกธูปฤาษี ชานอ้อย และผักตบชวา
Creators: name: เขมนิจจารีย์ สาริพันธ์
Publisher: name: กองบริหารการวิจัย
Year: 2563
Subjects: ประสิทธิภาพการดูดซับ
ดอกธูปฤาษี
ชานอ้อย
ผักตบชวา
น้ํามันและไขมัน
ของแข็งแขวนลอย

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 28, 11, 1966-1976
L'ouverture de données de la recherche en biologie
Creators: name: AKDOGAN, Meriç
name: Perrin, Sébastien
Publisher: name: Zenodo
Year: 2022
Subjects: open data
ouverture des données
research data
données de la recherche
données publiques
biologie
biology
science ouverte
open science

description: Présentation de deux heures à destination des doctorants en biologie
Through the gates of loving inquiry : where the heart opens into relationship
Creators: name: Shira, Ahava
Publisher: name: University of British Columbia
Year: 2010

description: I am an artist, arts-based researcher and healthy relationships educator. This dissertation documents my engagement in the creative and contemplative research practice of Loving Inquiry while living at my home on Butterstone Farm. After many years of teaching about healthy relationships in the classroom, and writing poetry and essays about my experience of relationships with people (Shira, 1998, 2005, 2007, 2008, 2009), I moved to the farm and discovered a new place of learning. Walking through the gates on the farm is a journey of encounter, marked with a tone of sacred possibility. Attending to the ongoing sensual, visual experience of opening and closing the gates, I attend to the relationship between self and other. Through the arts-based research practices of poetry, narrative and photography, I learn to pause, attend, breathe in and open my heart. Sounds, smells, visual cues, sensations as well as images, metaphors and linguistic resonances all invite me into connection. Through the Gates of Loving Inquiry communicates a transformative vision of loving relationship as an ongoing artful and heartful practice of attending to the generative and joyful possibilities of moment to moment engagement with self, other and the world. There is always another gate to open, another opportunity for the heart to open into relationship.
A remark on Waring decompositions of some special plane quartics
Creators: name: De Paris, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 15A99, 14M99

description: This work concerns Waring decompositions of a certain kind of plane quartics of high rank. The main result is the following. Let x, l_1, ...., l_7 be linear forms and q a quadratic form on a vector space of dimension 3. If x^2q=l_1^4+...+l_7^4 and the lines l_1=0, ..., l_7=0 in P^2 intersect x=0 in seven distinct points, then the line x=0 is (possibly improperly) tangent to the conic q=0.
Microbiological and Physicochemical Quality Categorisation of Artisanally Produced Alheira Fermented Sausages in Northern Portugal
Creators: name: Rodrigues, G.
name: Zefanias, O.
name: Coelho-Fernandes, S.
name: Fernandes, A.
name: Faria, A.S.
name: Barros, L.
name: Cadavez, V.
name: Gonzales-Barron, U.
Publisher: name: Zenodo
Year: 2023

description: Presented as Oral Presentation; and in Book of Abstracts of the International Seminar ArtiSaneFood - Biopreservation and Risk Modelling Approaches. Bragança, Portugal (24-25 May 2023) (Page 72).
Galaxy Disks are Submaximal
Creators: name: Bershady, Matthew A.
name: Martinsson, Thomas P. K.
name: Verheijen, Marc A. W.
name: Westfall, Kyle B.
name: Andersen, David R.
name: Swaters, Rob A.
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 measure the contribution of galaxy disks to the overall gravitational potential of 30 nearly face-on intermediate-to-late-type spirals from the DiskMass Survey. The central vertical velocity dispersion of the disk stars, sigma(z,R=0), is related to the maximum rotation speed (Vmax) as sigma(z,R=0) ~ 0.26 Vmax, consistent with previous measurements for edge-on disk galaxies and a mean stellar velocity ellipsoid axial ratio sigma(z) / sigma(R) = 0.6. For reasonable values of disk oblateness, this relation implies these galaxy disks are submaximal. We find disks in our sample contribute only 15% to 30% of the dynamical mass within 2.2 disk scale-lengths (hR), with percentages increasing systematically with luminosity, rotation speed and redder color. These trends indicate the mass ratio of disk-to-total matter remains at or below 50% at 2.2 hR even for the most extreme, fast-rotating disks (Vmax > 300 km/s), of the reddest rest-frame, face-on color (B-K ~ 4 mag), and highest luminosity (M(K)
description: 10 pages, 2 figures, to appear in ApJ Letters
Female athlete health domains: a supplement to the International Olympic Committee consensus statement on methods for recording and reporting epidemiological data on injury and illness in sport
Creators: name: Moore, Isabel S
name: Crossley, Kay
name: Bo, Kari
name: Mountjoy, Margo
name: Ackerman, Kathryn E
name: da Silva Antero, Juliana
name: Borgen, Jorunn Sundgot
name: Brown, Wendy J
name: Bolling, Caroline S
name: Clarsen, Benjamin
name: Derman, Wayne
name: Dijkstra, Paul
name: Donaldson, Amber
name: Elliott-Sale, Kirsty J
name: Emery, Carolyn A
name: Haakstad, Lene
name: Junge, Astrid
name: Mkumbuzi, Nonhlanhla S
name: Nimphius, Sophia
name: Palmer, Debbie
name: van Poppel, Mireille
name: Thornton, Jane S
name: Tomás, Rita
name: Zondi, Phathokuhle C
name: Verhagen, Evert
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 3202
subject: Clinical sciences
classificationCode: 5201
subject: Applied and developmental psychology
classificationCode: 4207
subject: Sports science and exercise

description: The IOC made recommendations for recording and reporting epidemiological data on injuries and illness in sports in 2020, but with little, if any, focus on female athletes. Therefore, the aims of this supplement to the IOC consensus statement are to (i) propose a taxonomy for categorisation of female athlete health problems across the lifespan; (ii) make recommendations for data capture to inform consistent recording and reporting of symptoms, injuries, illnesses and other health outcomes in sports injury epidemiology and (iii) make recommendations for specifications when applying the Strengthening the Reporting of Observational Studies in Epidemiology-Sport Injury and Illness Surveillance (STROBE-SIIS) to female athlete health data. In May 2021, five researchers and clinicians with expertise in sports medicine, epidemiology and female athlete health convened to form a consensus working group, which identified key themes. Twenty additional experts were invited and an iterative process involving all authors was then used to extend the IOC consensus statement, to include issues which affect female athletes. Ten domains of female health for categorising health problems according to biological, life stage or environmental factors that affect females in sport were identified: menstrual and gynaecological health; preconception and assisted reproduction; pregnancy; postpartum; menopause; breast health; pelvic floor health; breast feeding, parenting and caregiving; mental health and sport environments. This paper extends the IOC consensus statement to include 10 domains of female health, which may affect female athletes across the lifespan, from adolescence through young adulthood, to mid-age and older age. Our recommendations for data capture relating to female athlete population characteristics, and injuries, illnesses and other health consequences, will improve the quality of epidemiological studies, to inform better injury and illness prevention strategies.
Third minima in actinides - do they exist?
Creators: name: Kowal, M.
name: Skalski, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the existence of third, hyperdeformed minima in a number of even-even Th, U and Pu nuclei using the Woods-Saxon microscopic-macroscopic model that very well reproduces first and second minima and fission barriers in actinides. Deep ($3 ÷4$ MeV) minima found previously by Ćwiok et al. are found spurious after sufficiently general shapes are included. Shallow third wells may exist in $^{230,232}$Th, with IIIrd barriers $\le$ 200 and 330 keV (respectively). Thus, a problem of qualitative discrepancy between microscopic-macroscopic and selfconsistent predictions is resolved. Now, an understanding of experimental results on the apparent third minima in uranium becomes an issue.
description: 5 pages, 3 figures, 02. 03. 2012 - submitted to PRL
Observation of reentrant quantum Hall states in the lowest Landau level
Creators: name: Liu, Yang
name: Pappas, C. G.
name: Shayegan, M.
name: Pfeiffer, L. N.
name: West, K. W.
name: Baldwin, K. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Measurements in very low disorder two-dimensional electrons confined to relatively wide GaAs quantum well samples with tunable density reveal reentrant $ν=1$ integer quantum Hall states in the lowest Landau level near filling factors $ν=4/5$ and 6/5. These states are not seen at low densities and become more prominent with increasing density and in wider wells. Our data suggest a close competition between different types of Wigner crystal states near these fillings. We also observe an intriguing disappearance and reemergence of the $ν=4/5$ fractional quantum Hall effect with increasing density.
Constructive Visualization
Creators: name: Huron, S.
name: Carpendale, S.
name: Thudt, A.
name: Tang, A.
name: Mauerer, M.
Publisher: name: ACM
Year: 2014

description: If visualization is to be democratized, we need to provide a means for non-experts to create visualizations that allow them to engage with datasets. We present constructive visualization as a new paradigm for the simple creation of flexible, dynamic visualizations. Constructive visualization is simple---that skills required to build and manipulate the visualizations are akin to kindergarten play; it is expressive---one can build within the constraints of the chosen environment, and it also supports dynamics as these visualizations can be rebuilt and adjusted. We describe the conceptual components and processes underlying constructive visualization, and describe real-world examples to illustrate the utility of this approach. The constructive visualization approach builds on our inherent understanding and experience with physical building blocks, the model enables non-experts to create entirely novel visualizations, and to engage with datasets in a manner that would not have otherwise been possible.
The Dust Budget of the SMC: Are AGB Stars the Primary Dust Source at Low Metallicity?
Creators: name: Boyer, Martha L.
name: Srinivasan, S.
name: Riebel, D.
name: McDonald, I.
name: van Loon, J. Th.
name: Clayton, G. C.
name: Gordon, K. D.
name: Meixner, M.
name: Sargent, B. A.
name: Sloan, G. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We estimate the total dust input from the cool evolved stars in the Small Magellanic Cloud (SMC), using the 8 micron excess emission as a proxy for the dust-production rate. We find that Asymptotic Giant Branch (AGB) and red supergiant (RSG) stars produce (8.6-9.5) x 10^7 solar masses per year of dust, depending on the fraction of far-infrared sources that belong to the evolved star population (with 10%-50% uncertainty in individual dust-production rates). RSGs contribute the least (<4%), while carbon-rich AGB stars (especially the so-called "extreme" AGB stars) account for 87%-89% of the total dust input from cool evolved stars. We also estimate the dust input from hot stars and supernovae (SNe), and find that if SNe produce 10^-3 solar masses of dust each, then the total SN dust input and AGB input are roughly equivalent. We consider several scenarios of SNe dust production and destruction and find that the interstellar medium (ISM) dust can be accounted for solely by stellar sources if all SNe produce dust in the quantities seen around the dustiest examples and if most SNe explode in dense regions where much of the ISM dust is shielded from the shocks. We find that AGB stars contribute only 2.1% of the ISM dust. Without a net positive contribution from SNe to the dust budget, this suggests that dust must grow in the ISM or be formed by another unknown mechanism.
description: 10 pages, 5 figures. Accepted for publication in ApJ
Oxide-based Visible Light Photoelectrochemical Water Splitting: Nanodimensional and Heterointerface Design of Photocatalysts
Creators: name: KOK HONG TAN
Publisher: name: Monash University
Year: 2020
Subjects: subject: Applied Physics
subject: 91205 Functional Materials
subject: FOS: Materials engineering
subject: 90608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Solar-driven photoelectrochemical (PEC) water splitting has drawn great interest due to its significant role in environmentally clean technology. Most studied oxide semiconductors with hybrid structure have been envisaged to improve photoactivity performance. Unfortunately, they are inhibited by several factors, such as (i) large energy band gap which only possesses photoactivity within the UV region, (ii) competitive redox reaction as the result of polycrystalline orientation, and (iii) charge separation efficiency of photoexcited electron-hole pairs. To overcome the above-mentioned factors, materials with different functionalities into nanostructures and heterointerfaces were fabricated to engineer the interface properties, which affect the contact energy gap and the concentration of defects of materials.
A multi-epoch XMM-Newton campaign on the core of the massive Cyg OB2 association
Creators: name: Rauw, Gregor
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the large interstellar reddening towards Cyg OB2, many studies, spanning a wide range of wavelengths, have been conducted to more clearly understand this association. X-ray observations provide a powerful tool to overcome the effect of interstellar absorption and study the most energetic processes associated with the stars in Cyg OB2. We analyse XMM-Newton data to investigate the X-ray and UV properties of massive O-type stars as well as low-mass pre-main sequence stars in Cyg OB2. We obtained six XMM-Newton observations of the core of Cyg OB2. In our analysis, we pay particular attention to the variability of the X-ray bright OB stars, especially the luminous blue variable candidate Cyg OB2 #12. We find that X-ray variability is quite common among the stars in Cyg OB2. Whilst short-term variations are restricted mostly to low-mass pre-main sequence stars, one third of the OB stars display long-term variations. The X-ray flux of Cyg OB2 #12 varies by 37%, over timescales from days to years, whilst its mean log(L_X/L_bol) amounts to -6.10. These properties suggest that Cyg OB2 #12 is either an interacting-wind system or displays a magnetically confined wind. Two other X-ray bright O-type stars (MT91 516 and CPR2002 A11) display variations that suggest they are interacting wind binary systems.
description: Accepted for publication in Astronomy & Astrophysics
Non-relativistic spectrum of two-color QCD at non-zero baryon density
Creators: name: Hands, Simon
name: Kim, Seyong
name: Skullerud, Jon-Ivar
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The heavy quarkonium spectrum of Two Color QCD (QC$_2$D) at non-zero quark chemical potential $μ$ and temperature $T$ with $μ/T\gg1$ has been calculated in both $S$- and $P$-wave channels using a lattice non-relativistic formulation of QC$_2$D. As $μ$ is varied, the quarkonium spectra reveal three separate regions, corroborating previous findings that there are three distinct physical regimes of QC$_2$D at low temperature and high baryon density: hadronic matter, quark/quarkyonic matter, and deconfined matter. The results are interpreted in terms of the formation of heavy-light $Qq$ states in the two-color baryonic medium.
description: 14 pages, 6 figures
Review Protocol for the "Pathogens in Foods" Database: Prevalence and Concentration of Main Biological Hazards in Food Matrices
Creators: name: Gonzales-Barron, Ursula
name: Cadavez, Vasco
name: Faria, Ana Sofia
name: Guillier, Laurent
name: Thebault, Anne
name: Kooh, Pauline
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Foodborne pathogens
subject: Occurrence
subject: Counts
subject: http://browser.agrisemantics.org/gacs/en/page/C2753
subject: http://browser.agrisemantics.org/gacs/en/page/C2256
subject: http://browser.agrisemantics.org/gacs/en/page/C1782

description: This is the protocol for conducting systematic reviews aimed at identifying and extracting information and data on the occurrence of the most important biological hazards in various foods produced and marketed in Europe. Such protocol is employed to periodically update the web application Pathogens in Foods (https://pif.esa.ipb.pt/) through a dedicated database insertion system (https://pathogens-in-food-frontend.vercel.app/).
description: EU; en; PDF; Pauline.KOOH@anses.fr; ubarron@ipb.pt
The elliptic flow in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5 and 39 GeV at STAR
Creators: name: Shi, Shusu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present elliptic flow, $v_2$, measurements for charged and identified particles at midrapidity in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5 and 39 GeV at STAR. We compare the inclusive charged hadron $v_2$ to those from high energies at RHIC ($\sqrt{s_{NN}}$ = 62.4 and 200 GeV), at LHC ($\sqrt{s_{NN}}$ = 2.76 TeV). A significant difference in $v_2$ between baryons and anti-baryons is observed and the difference increases with decreasing beam energy. We observed the $v_2$ of $ϕ$ meson is systematically lower than other particles in Au+Au collisions at $\sqrt{s_{NN}}$ = 11.5 GeV.
description: 6 pages, 3 figures - To appear in the conference proceedings for Strangeness in Quark Matter 2011, Cracow, Poland, September 18-24, 2011
WaaZaam! Supporting Creative Play at a Distance in Customized Video Environments
Creators: name: Hunter, S.
name: Maes, P.
name: Tang, A.
name: Inkpen, K.
Publisher: name: ACM
Year: 2014

description: We present the design, implementation and evaluation of WaaZam, a video mediated communication system designed to support creative play in personalized environments. Users can interact together in sets composed of digital assets layered in 3D space. The goal of the project is to support creative play and increase social engagement during video sessions of geographically separated families. We focus particularly on understanding the value of customization for families with children ages 6-12. We present interviews with creativity experts, a pilot study and a formal evaluation of families playing together in four conditions: separate windows, merged windows, digital play sets, and personalized digital environments. We found that playing in the same video space enables new activities and increases social engagement for families. Personalization allows families to customize environments for their needs and supports more creative play activities that embody the imagination of the child.
Molecular epidemiology of Giardia spp. in different hosts and watersheds
Creators: name: Prystajecky, Natalie Anne
Publisher: name: University of British Columbia
Year: 2010

description: Giardia lamblia has been problematic in British Columbia (BC) since the 1980s, having been the etiological agent in 13 of the 29 documented waterborne outbreaks in the province. Despite improvements to drinking water facilities, giardiasis continues to occur at higher rates in BC compared to the rest of Canada. This study aimed to address knowledge gaps with regard to the occurrence and molecular epidemiology of Giardia isolates, to help address the higher occurrence of giardiasis in British Columbia. This study was conducted in three steps. First, tools were developed and validated to genotype G.lamblia isolates into groups/genotypes called Assemblages. These tools were first applied to a library of archived G.lamblia isolates collected from patients, animals and water sources in British Columbia. These same tools were then applied to water samples collected in the Salmon River watershed in the Township of Langley, BC, the second stage of the study. The occurrence and characteristics of isolates collected in the Salmon River were then compared to isolates collected in the Grand River watershed, an intensely developed mixed-urban watershed in Ontario, for the third stage of the study. In the first study, it was determined that 18s rRNA nested PCR with sequencing was the most appropriate molecular epidemiological tools to study G.lamblia in water supplies. Using a combination of molecular methods and USEPA Method 1623, it was determined that the majority of isolates in the Salmon River watershed were potentially infectious to humans (belonging to Assemblages A and B), with Assemblage A occurring most frequently. In contrast, Assemblage B was the most frequently detected genotype in the Grand River watershed, a more intensely developed watershed. Analysis of rainfall and sequence data suggests that G.lamblia isolates could have originated from sewage effluent or septic tanks, which was confirmed with the occurrence of Cryptosporidium hominis. Non-zoonotic G.lamblia isolates occurred more frequently in the Grand River watershed than in the Salmon River watershed but this water source still represents a threat to public health. Although challenging to incorporate molecular analyses into environmental monitoring, suggestions are made for the most effective linking of molecular analyses into Method 1623.
Extended Equivalence Principle: Implications for Gravity, Geometry and Thermodynamics
Creators: name: Sivaram, C.
name: Arun, Kenath
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The equivalence principle was formulated by Einstein in an attempt to extend the concept of inertial frames to accelerated frames, thereby bringing in gravity. In recent decades, it has been realised that gravity is linked not only with geometry of space-time but also with thermodynamics especially in connection with black hole horizons, vacuum fluctuations, dark energy, etc. In this work we look at how the equivalence principle manifests itself in these different situations where we have strong gravitational fields. In recent years the generalised uncertainty principle has been invoked to connect gravity and curvature with quantum physics and now we may also need an extended equivalence principle to connect quantum theory with gravity.
description: This paper received the Honourable Mention in 2012 Awards for Essays on Gravitation; 8 pages
An Empirical Analysis of the Link Between Built Environment and Safety in Chicago’s Transit Station Areas
Creators: name: Zandiatashbar, Ahoura
name: Laurito, Agustina
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Considering that safety is a key environmental factor that promotes health, understanding the relationship between built environment features around transit station areas and crime may shed light on how to foster healthy communities. Yet, there is limited work that has examined how the combination of different built environment features around transit correlate with different crimes. We addressed this issue in this study using data from Chicago (IL). First, we used cluster analysis to classify stations in Chicago in a spectrum from transit-oriented development (TOD) to transit-adjacent development (TAD) categories depending on their built environment characteristics: central business district (CBD)–TOD, TOD, hybrid, and TAD. Then, we identified the block groups that fell within a 1-mile network distance of each of these station areas and used propensity score matching to find adequate comparison block groups for them. Results from our analyses show that CBD station areas with the highest activity density, land use diversity, amenity richness, accessibility, and walkability (i.e., CBD–TOD) were the safest. In contrast, TOD areas with medium activity density and land use diversity but high amenity richness, walkability, and accessibility appeared to be the least safe. That said, low levels across these built environment features as found in TAD station areas also correlated with higher crime. These findings suggest the importance of balancing amenity richness and accessibility with density and land use diversity. Areas rich in amenities but with lower levels of land use diversity and density may attract crime victims and offenders while facilitating spaces in which the availability of eyes on the street or guardians is low. As such, these station areas may be poor promoters of healthy communities if high crime rates deter people from engaging in active mobility promoted by greater walkability, connectivity, and amenity richness.
Edge detection based on morphological amoebas
Creators: name: Lee, Won Yeol
name: Kim, Young Woo
name: Kim, Se Yun
name: Lim, Jae Young
name: Lim, Dong Hoon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Detecting the edges of objects within images is critical for quality image processing. We present an edge-detecting technique that uses morphological amoebas that adjust their shape based on variation in image contours. We evaluate the method both quantitatively and qualitatively for edge detection of images, and compare it to classic morphological methods. Our amoeba-based edge-detection system performed better than the classic edge detectors.
description: To appear in The Imaging Science Journal