cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Fragile Field. The Development and Transformation of Science and Technology Studies in Switzerland
Creators: name: Burri, Regula Valérie
name: Merz, Martina
Publisher: name: Tecnoscienza – Italian Journal of Science & Technology Studies
Year: 2017

description: This contribution reconstructs the history of Science and Technology Studies in Switzerland. With a focus on the institutional aspects of the field’s emergence, it traces early initiatives to foster social research on science and technology, then considers, in more detail, the network building that led to the foundation of the Swiss Association for the Studies of Science, Technology, and Society (STS-CH). It also identifies important sites of STS research in the Swiss academic landscape. This reconstruction reveals characteristics of the field as it emerges such as the late uptake of STS research in Switzerland compared to other European countries, the importance of young researchers and bottom-up initiatives for the building of a relevant academic network, and processes of fragile institutionalization and of de-institutionalization. To conclude, the contribution reflects on the field’s (inter)national and (inter)disciplinary configuration.
description: Tecnoscienza – Italian Journal of Science & Technology Studies, Vol. 8 No. 1 (2017): Tecnoscienza Nr. 15
Modulation of HIV-1 replication and T cell activation by FoxP3
Creators: name: Holmes, Derek Allan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Regulatory T cells (Treg) are defined as the population of CD4+CD25+ that express the forkhead transcription factor family member FoxP3. Treg cells are characterized by the inability to produce IL-2 upon stimulation, defects in in vitro proliferation, and the ability to suppress effector T cell (Teff) activation. FoxP3 plays a crucial role in Treg function and is thought to be a factor required for the development and maintenance of Tregs. We first set out to describe the role of FoxP3 in the regulation of HIV LTR activation in Treg cells. Upon primary Treg infection with HIV-1 NL4-luciferase reporter virus, we observed increased transcription of the LTR. Similarly, primary T cells or Jurkat T cells transduced with retrovirus expressing Foxp3 showed a similar enhancement of HIV-1 LTR. We demonstrate that Foxp3 enhancement of LTR requires intact NF-κB binding sites, and FoxP3 expression is associated with increased binding of NF-κB at the core enhancer of HIV-1 LTR and differential histone acetylation of the LTR and IL-2 promoters. We demonstrate that FoxP3 expression in Jurkat T cells and primary Tregs inhibits global HDAC activity. Specifically, Foxp3 inhibits HDAC1 activity and this function requires the proline-rich domain. We show that FoxP3 is present in a large molecular weight complex with HDAC1, and interacts with HDAC1 in T cells. A point mutation in the forkhead domain that inhibits Foxp3 function in Tregs in vivo is unable to associate with and inhibit HDAC1 activity, suggesting the importance of FoxP3/HDAC1 interaction for HDAC1 inhibition. Finally, we demonstrate knockdown of HDAC1 inhibits FoxP3 regulation of IL-2 expression and HIV-1 LTR activity in T cells. Lastly, we report that FoxP3 interacts with the ATPase nucleosome remodeler Mi-2β in T cells. This interaction requires the zinc-finger domain, and FoxP3 expression is associated with a decreased binding of Mi-2β at the IL-2 promoter. We also demonstrate that knockdown of Mi-2β inhibits IL-2 expression, supporting a model for FoxP3-mediated repression of transcription through the removal of factors required for optimal gene expression. Thus, FoxP3 regulates gene expression at multiple levels, from transcription factor modulation to chromatin remodeling factor regulation.
Von "chiralen" Superhelices zu achiralen Nanostrukturen
Creators: name: Ouart, André
Publisher: name: Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I
Year: 2000
Subjects: subject: J-Aggregate
subject: Cyaninfarbstoffe
subject: supramolekulare Nanoarchitekturen
subject: künstliche Antennen- undLichtsammelsysteme
subject: J-aggregates
subject: cyanine dyes
subject: supramolecular nanoarchitectures
subject: artificial antenna and lightharvesting systems
subject: 540 Chemie
subject: 30 Chemie

description: In dieser Arbeit wurden spektroskopische und strukturelle Untersuchungen an chiralen und achiralen supramolekularen Nanoarchitekturen von J-Aggregaten achiraler Cyaninfarbstoffe durchgeführt. Als Modellsysteme wurden Tetrachlorobenzimidacarbocyanin- Farbstoffe mit unterschiedlichen 1,1´-Dialkyl- und 3,3´-Bis-acidoalkyl-Gruppen verwendet. Zur Charakterisierung der Nanostrukturen wurden statische spektroskopische Methoden - UV/Vis-Spektroskopie, Circulardichroismus (CD)- und Fluoreszenzspektroskopie -, Röntgenkristallstrukturanalyse,sowie kryogene Transmissionselektronenmikroskopie (Cryo-TEM) verwendet. Die delikate Balance der Wechselwirkungskräfte, wie z. B. hydrophobe Wechselwirkung, Dispersionswechselwirkung, sowie Wasserstoffbrücken, führt bei der J-Aggregation von strukturell ähnlichen achiralen Chromophoren zu "chiralen" Superhelices und achiralen nanoskopischen Bändern. Durch Kombination der hydrophoben und hydrophilen Eigenschaften von Tensiden mit den unikalen Eigenschaften von J-Aggregaten entstehen Nanoröhren und Vesikel. Diese Nanostrukturen sind daher vielversprechende Kandidaten für künstliche Lichtsammel- und Antennensysteme.
description: In this work spectroscopic and structural investigations were performed on chiral and achiral supramolecular nanoarchitectures of J-aggregates of achiral cyanine dyes. Tetrachlorobenzimidacarbocyanine dyes with different 1,1´-Dialkyl- and 3,3´-Bis-acidoalkyl- substituents were used as model systems. To characterize these nanoarchitectures static spectroscopic methods - UV/vis-spectroscopy, circular dichroism (CD)- and fluorescence-spectroscopy -, x-ray crystal structure analysis, as well as cryogenic transmission electron microscopy (cryo-TEM) were used. The delicate balance of intermolecular forces, like hydrophobic interaction, dispersion forces, as well as hydrogen bonds, leads by J-aggregation of structural similar achiral chromophores to "chiral" superhelices and achiral nanoscopic ribbons. By combination of the hydrophobic and hydrophilic properties of surfactants with the unique properties of J-aggregates nanotubules and vesicles are built. These nanostructures are hopeful candidates for artificial antenna and light harvesting systems.
Sociotechnical Environments. Actors, Technologies, Geographies and New Kinds of Action
Creators: name: Ekardt, Felix
name: Fassert, Christine
name: Pellizzoni, Luigi
Publisher: name: Tecnoscienza – Italian Journal of Science & Technology Studies
Year: 2017

description: This section draws from the opening plenary session of the 6th STS Italia Conference “Sociotechnical Environments” (Trento, 24-26 November 2016). The section was dedicated to the topic “Sociotechnical Environments: actors, technologies, geographies and new kinds of action”. It is composed by three contributions which articulate different relationships among actors, technologies and sociotechnical environments. Felix Ekardt presents an analysis of the scope of technologies with reference to societal problems, analysing the case of climate change. The idea of sufficiency as leading human behaviour for a sustainable normality drives the author’s analysis of the node technology-environments-action. The second contribution by Luigi Pellizzoni is an epistemological travel around possibilities and conditions of an alternative science. Drawing from philosophical and STS literature the author inquires the (not) surprising convergences between critical STS literature and neo-liberal approaches, pointing to the concepts of materiality and materialism, In the third piece of the section Christine Fassert focuses on the node of actors-technologies-geographies through the case of Fukushima contaminated territories. She presents technologies of zoning in their ambivalence towards residents’ life and multifaceted consequences of scientific controversies in territorialised risks.
description: Tecnoscienza – Italian Journal of Science & Technology Studies, Vol. 8 No. 1 (2017): Tecnoscienza Nr. 15
Digital Watthour Meter Auto-Calibrate Using Microprocessor
Creators: name: Alali, Walid Y
name: A. H. Abdul-Karim, Majid
Publisher: name: figshare
Year: 2023
Subjects: Interaction and experience design
Industrial electronics
Electrical engineering not elsewhere classified
Engineering design

description: Abstract: This paper introduces the design of a Single-phase watthour meter auto-calibrating. The important advantage of the watthour scale is the multiplication is done by the newly developed self-calibration multiplier (SCM) with superior stability. The self-calibration multiplier IC applies an analogue multiplier to perform the multiplication, detects and also compensates for large sources of error caused by changing the multiplication parameter including the out-put offset. According to this result, the self-calibration multiplier has stable input and output characteristics. The correction of the multiplication factor is based on an IC reference voltage that uses the Zener diode. Consequently, the stability of the self-calibration multiplier and the meter depends on the reference voltage stability. While the other pieces are additional circuits to adjust the zero load and the unnecessary full load.
Competition between Blue Collar Latinos and Blacks in Growing and Declining Industries in North Carolina
Creators: name: Knauer, Stefanie R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Blue collar immigrant Latinos have increasingly gained employment within North Carolina's growing meatpacking industry and declining textile industry from 1980 to 2000. This paper uses three decades of Census data to provide a theoretically descriptive discussion about trends and patterns that have emerged within these industries. Results indicate that in meatpacking, Latinos are being crowded into low wage ghettos, despite cases where they are substituting for exiting white workers or where they have been queued upward into better paying jobs. In textiles, Latinos gained employment because they are inexpensive labor or because they are substituting for whites and slowing growth among blacks. Within narrow occupational categories, interpretations of growing Latino presence were consistent from macro to micro levels while in other cases crowding in meatpacking and wage discrimination in textiles were not foreshadowed. Overall, Latinos appear to be affecting employment rates of whites more than blacks in both industries.
Yet another look at positive linear operators, $q$-monotonicity and applications
Creators: name: Kopotun, K.
name: Leviatan, D.
name: Prymak, A.
name: Shevchuk, I. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 41A10, 41A17, 41A25

description: For each $q\in{\mathbb{N}}_0$, we construct positive linear polynomial approximation operators $M_n$ that simultaneously preserve $k$-monotonicity for all $0\leq k\leq q$ and yield the estimate \[ |f(x)-M_n(f, x)| \leq c ω_2^{φ^λ} \left(f, n^{-1} φ^{1-λ/2}(x) \left(φ(x) + 1/n \right)^{-λ/2} \right) , \] for $x\in [0,1]$ and $λ\in [0, 2)$, where $φ(x) := \sqrt{x(1-x)}$ and $ω_2^ψ$ is the second Ditzian-Totik modulus of smoothness corresponding to the "step-weight function" $ψ$. In particular, this implies that the rate of best uniform $q$-monotone polynomial approximation can be estimated in terms of $ω_2^φ \left(f, 1/n \right)$.
CONTAIN
Creators: name: O'Connell, Nicola
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences

description: COVID-19 represents a serious challenge to governments and healthcare systems. In addition to testing/contact tracing, behavioural (e.g., hand-washing) and social responses (e.g., social distancing/cocooning) are effective tools for mitigating the spread of the disease. Psychological (e.g., risk perceptions, self-efficacy) and contextual factors (government, public health messaging etc.) are likely to drive these behaviours. Collated real time information of these indicators strengthens local, national and international public health advice and messaging. Further, the degree to which public health and government messages and measures are understood, communicated via (social) media and adhered to are vital. There are two governments and public health jurisdictions on the island of Ireland (Republic of Ireland (ROI) and Northern Ireland (NI)). This represents a unique opportunity to explore implications of differing measures and messaging across these two jurisdictions as they relate to COVID-19 on two similar populations. The expert research team are drawn from a range of disciplines in the ROI and NI. This project has four nested studies: 1. We will assess key behavioural, social and psychological factors through a large, prospective representative telephone survey of individuals aged over-18 on a weekly basis over eight weeks (n=3072); plus qualitative focus groups over the same period. 2. We will interrogate social media messaging and formal media responses in both jurisdictions to investigate the spread of (mis)information. 3. We will model data from Studies 1 and 2, plotting the psychosocial/behavioural and media messaging information with international, ROI and NI incidence and mortality data. 4. We will conduct an assessment of health policy transfer in an attempt to incorporate the most significant public health and political insights from each jurisdiction. An evidence-based toolbox for targeting of public health messaging and political leadership will be created for use for the anticipated October wave of COVID-19, and subsequently for future epidemics/pandemics.
Theory within a Policy. Dissecting Capacity Development, Harvesting Knowledge Stances
Creators: name: Balanzo-Guzman, Alejandro
Publisher: name: Tecnoscienza – Italian Journal of Science & Technology Studies
Year: 2017

description: This essay unpacks capacity development policies, discussing its core rationales and building theory out of its main conceptual assumptions. Capacity development focuses on addressing and improving the elusive terms, qualities and means of "capacity" needed for lasting development. The essay addresses the following questions: what are the core rationales of capacity development? What theoretical sources lay within capacity development? Is it possible to distil analytical synthesis from these theoretical sources? It draws upon the understanding of agency as described by capacity development. Its theoretical foundations are extracted and discussed, building a single corpus: the knowledge stance perspective is proposed to observe meso-level agency. It builds on institutional work and innovation intermediation scholarly streams. The knowledge-stances perspective on agency shows a set of knowledge stances as analytical tools. Stances of boundary exploration, boundary setting and practice work are shown as forms of enacting, positioning and expanding a practice field. Stances of knowledge exploration, intermediation and supply are shown as strategies to enlarge its cognitive base. The theoretical value of this perspective accounts for a twofold purpose. First, addressing the realms of knowledge at stake in meso-level interaction, as a means to deepen conceptual reach on the myriad of discourses currently fostering change. Second, promoting a scope of practice and research that allows framing (capacity) development beyond the project level and the donor-focused scope.
description: Tecnoscienza – Italian Journal of Science & Technology Studies, Vol. 8 No. 1 (2017): Tecnoscienza Nr. 15
The Museum as a Platform for Sound Culture
Creators: name: Zardini Lacedelli, Stefania
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: In the twenty-first century, museums are in the midst of a paradigm shift. Digital revolution has introduced new spaces, practices, types of heritage, as well as ways to conceive the museum itself. This PhD research investigates the role that sound culture could have in this evolution. After two centuries of primacy of visual and material culture, sound has received growing attention both as an element of the collections and means of designing experiences, disrupting previous assumptions and requiring new ways of thinking. This thesis explores if the variety of ways through which sounds are consumed, shared and created in the contemporary society can be a catalyst for the adoption of a new museum conceptualization: the ‘Platform-Museum’. In the first stage of the research, a case study approach was applied, to investigate the strategies and practices in sound curation on digital platforms developed by two world class heritage organizations: the British Library and the Science Museum Group. The results of this qualitative research then informed a design experiment in a museum context, where Platform Thinking was applied to the co-design of a sonic practice. As a result, a collaborative online project - #SonicFriday - was developed in summer 2020 at the National Science and Media Museum in Bradford, which involved museum curators, volunteers and social media users in the creation of sonic narratives and digital memories. The findings reveal how the solutions adopted to answer the challenges posed by sound can accelerate the adoption of the Platform Model. The sonic practices experimented in the research have prompted a shift to a more emotional, personal and participatory approach to curation, showing how sound can offer a new philosophy, as well as tools and practices, to orient museums in the contemporary society. The thesis ultimately demonstrates how the new conceptualization of the ‘Platform-Museum’ can open new, thriving perspectives for the practices of collecting, curating and engaging in the twenty-first century, so inaugurating a new chapter in the history of heritage institutions.
Digital Watthour Meter Auto-Calibrate Using Microprocessor
Creators: name: Alali, Walid Y
Publisher: name: figshare
Year: 2022
Subjects: Interaction and experience design
Industrial electronics
Electrical engineering not elsewhere classified
Engineering design

description: Abstruct: This paper introduces the design of a Single-phase watthour meter auto-calibrating. The important advantage of the watthour scale is the multiplication is done by the newly developed self-calibration multiplier (SCM) with superior stability. The self-calibration multiplier IC applies an analogue multiplier to perform the multiplication, detects and also compensates for large sources of error caused by changing the multiplication parameter including the out-put offset. According to this result, the self-calibration multiplier has stable input and output characteristics. The correction of the multiplication factor is based on an IC reference voltage that uses the Zener diode. Consequently, the stability of the self-calibration multiplier and the meter depends on the reference voltage stability. While the other pieces are additional circuits to adjust the zero load and the unnecessary full load.
The Network of Experts and the Construction of Cultural Heritage. Identity Formation in Contemporaneity
Creators: name: Muriel, Daniel
Publisher: name: Tecnoscienza – Italian Journal of Science & Technology Studies
Year: 2017

description: This paper presents the most important findings of a research project on the expert processes that mediate in the construction of a sense of belonging through cultural heritage in the context of the Basque Country. Drawing from a theoretical framework based on Post-structuralism, Science and Technology Studies (STS), as well as other contemporary and classic sociological schools, this paper uses a qualitative approach (interviews and participant observations) that led to the analysis and description of the main expert processes involved in the construction of a relationship between cultural heritage and the community, group or society that considers it as part of their own identity.
description: Tecnoscienza – Italian Journal of Science & Technology Studies, Vol. 8 No. 1 (2017): Tecnoscienza Nr. 15
The Becoming Environmental of Computation. From Citizen Sensing to Planetary Computerization
Creators: name: Gabrys, Jennifer
Publisher: name: Tecnoscienza – Italian Journal of Science & Technology Studies
Year: 2017

description: In citizen-sensing projects, more extensively and democratically gathered data are typically presented as “the reasons for measuring air pollution”, since it is through collecting data that everything from enhanced participation in environmental issues to changes in policy are hoped to be achieved. The impetus to monitor and gather data is bound up with established (and emerging) processes of understanding environments as information-based problems. Within citizen-sensing projects, data are intended to be collected in ways that complement, reroute or even circumvent and challenge the usual institutions and practices that monitor environments and manage environmental data. Data are seen to enable modes of action that are meant to offer effective ways to respond to those problems. With more data, potentially more accurate data, and more extensively distributed data, environmental problems such as air pollution are anticipated to be more readily and effectively addressed. Data are intertwined with practices, responses to perceived problems, modes of materializing and evidencing problems, and proposals for political engagement. But how are air-quality data constituted, whether through expert or citizen practices? How do differing practices of environmental monitoring inform the character and quality of data gathered, as well as the possible trajectories and effects of those data? What are the instruments, relations, and experiences of air-quality data generated through these distinctive engagements with environments and technology? And in what ways do environments become computational through the use of low-cost air-pollution monitoring technologies? I consider how citizen-sensing practices that monitor air pollution experiment with the tactics and arrangements of environmental data.
description: Tecnoscienza – Italian Journal of Science & Technology Studies, Vol. 8 No. 1 (2017): Tecnoscienza Nr. 15
aspirational conceptual architecture of/for OSF
Creators: name: Booth, Abram
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Communication
subject: Physical Sciences and Mathematics
subject: Medicine and Health Sciences
subject: Organizational Communication
subject: Computer Sciences
subject: Systems Architecture
subject: Mental and Social Health
subject: Art Therapy
subject: Social and Behavioral Sciences

description: what i think OSF is trying to be, was supposed to be, or could become... aiming for a bite-size mental model that we could feasibly build toward and that would remain coherent at various levels of abstraction
The dynamic role of Hsp40 chaperones in protein aggregation and proteotoxicity
Creators: name: Douglas, Peter Mahan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Protein homeostasis or proteostasis involves an intricate balance between the synthesis, folding, localization and degradation of each protein in the cell. Perturbations by age or chronic stress can compromise any one component of this integrated network and initiate a cascade of toxic misfolding events. Protein conformational disorders such as Alzheimer's disease, transmissible spongiform encephalopathies, and the polyglutamine-expansion diseases are characterized by the misfolding and subsequent conversion of disease-related proteins into [beta]-sheet-rich conformers capable of assembling into highly ordered aggregates termed amyloid. For over a century, amyloid fibrils were believed to represent the toxic agent behind these diseases due to their overwhelming presence in postmortem brains of diseased individuals. However, recent evidence has begun to challenge the notion that amyloid formation is the toxic mechanism. Two observations described herein suggest that amyloid formation provides the cell a mechanism to buffer the formation of toxic protein species. First, my studies demonstrate that amyloid formation by the yeast prion protein, Rnq1, protects cells against proteotoxicity. Interestingly, the Hsp40 chaperone, Sis1, mediates the efficient conversion of nascent Rnq1 into amyloid-like, [RNQ+] prion assemblies. Inefficiencies in Sis1-mediated [RNQ+] assembly result in the toxic accumulation of soluble, low molecular weight oligomers. Second, Sis1 activity relocates [RNQ+] prion assembly pathways from the cytosol to the nucleus, in which [RNQ+] assembly was more efficient and less toxic. Sis1 modulates the conformation of [RNQ+] prions which, in turn, act as environmental factors to promote toxicity of a huntingtin's protein exon-1 fragment with an expanded polyglutamine tract (Htt-103Q). Complex formation between [RNQ+] prions and Htt-103Q enabled nuclear [RNQ+] aggregates to attract Htt-103Q from the cytosol to the nucleus, which reduced the efficiency of nuclear Htt-103Q aggregation and exacerbated Htt-103Q toxicity. Thus, amyloid formation appears to represent a protective mechanism to ameliorate the toxic accumulation of small, soluble intermediates in the aggregation pathway. My studies also demonstrate that molecular chaperones directly and indirectly influence the cellular location of amyloidogenic proteins and therefore have a profoundly impact on proteotoxicity because the cytosol and nucleus have different capacities to package disease proteins into benign assemblies.
title: Aplikacje projektowe w świetle badań dotyczących posoborowej architektury sakralnej w Poznaniu
Creators: name: Bonenberg, Agata
name: Skórzewski, Wojciech
Publisher: name: Publishing House of Poznan University of Technology
Year: 2022

description: Zeszyty Naukowe Politechniki Poznańskiej. Architektura, Urbanistyka, Architektura wnętrz, 8, 89-106
Mixed and stabilized finite element methods for the obstacle problem
Creators: name: Gustafsson, Tom
name: Stenberg, Rolf
name: Videman, Juha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We discretize the Lagrange multiplier formulation of the obstacle problem by mixed and stabilized finite element methods. A priori and a posteriori error estimates are derived and numerically verified.
The influence of temperature dynamics and dynamic finite ion Larmor radius effects on seeded high amplitude plasma blobs
Creators: name: Held, M.
name: Wiesenberger, M.
name: Madsen, J.
name: Kendl, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Thermal effects on the perpendicular convection of seeded pressure blobs in the scrape-off layer of magnetised fusion plasmas are investigated. Our numerical study is based on a four field full-F gyrofluid model, which entails the consistent description of high fluctuation amplitudes and dynamic finite Larmor radius effects. We find that the maximal radial blob velocity increases with the square root of the initial pressure perturbation and that a finite Larmor radius contributes to highly compact blob structures that propagate in the poloidal direction. An extensive parameter study reveals that a smooth transition to this compact blob regime occurs when the finite Larmor radius effect strength, defined by the ratio of the magnetic field aligned component of the ion diamagnetic to the $\vec{E}\times\vec{B}$ vorticity, exceeds unity. The maximal radial blob velocities agree excellently with the inertial velocity scaling law over more than an order of magnitude. We show that the finite Larmor radius effect strength affects the poloidal and total particle transport and present an empirical scaling law for the poloidal and total blob velocities. Distinctions to the blob behaviour in the isothermal limit with constant finite Larmor radius effects are highlighted.
Speed-dependent ice bandings in freezing colloidal suspensions
Creators: name: You, Jiaxue
name: Wang, Jincheng
name: Wang, Lilin
name: Wang, Zhijun
name: Li, Junjie
name: Lin, Xin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Formation mechanism of speed-dependent ice bandings in freezing colloidal suspensions, of significance in frost heaving and materials science, remains a mystery. With quantitative experiments, we propose a possible mechanism of speed-dependent ice bandings by focusing on the particle packing density and dynamic interface undercooling. The particle packing density ahead of the freezing interface decreases with increasing pulling speeds, attributed to the speed-dependent packing of particles. Through affecting the curvature undercooling of pore ices, the speed-dependent packing of particles can be used to explain speed-dependent thicknesses of ice bandings. The dynamic interface undercooling was obtained to explore curvature undercooling of pore ices and quantitative details of transient interface positions, speeds and undercooling were given. All the evidences imply that the speed-dependent particle packing and dynamic interface undercooling are responsible for speed-dependent ice bandings.
description: 16 pages, 5 figures
A Study of Optical and Electronic Properties of a Semiconducting Polymer, Poly(o-methoxyaniline)
Creators: name: Shrestha, Roshan Prasad
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: The optical properties of spin coated thin films of poly(o-methoxyaniline) (POMA) were investigated using spectroscopic ellipsometry (SE) complimented by optical absorption spectroscopy in the visible-near UV optical range and atomic force microscopy (AFM) for surface roughness. For these studies a custom built ellipsometer was constructed and interfaced with a computer and software was written in LABVIEW™ for automation. A Gaussian oscillator optical model was used to fit the data obtained from SE. roughness results were also evaluated in an optical model. The effect of different spin deposit conditions including spin rate, and concentration of solution and deposition ambient on the POMA film thickness, surface roughness, optical properties and optical anisotropy have been investigated. Small uniaxial anisotropy has been measured and annealing leads to some densification and surface smoothing. Organic thin film transistors (OTFT) were fabricated with POMA as the active semiconductor layer, silicon dioxide (SiO2) as the gate dielectric, heavily doped silicon as the substrate, and vacuum evaporated gold lines as the source and drain contacts. The electronic properties were characterized using a custom built probe station. The custom probe station was also automated with software program written in LabVIEW™. POMA yielded a P-channel device, and from transfer characteristic and turn-on plot, the charge mobility was calculated which was in the range of about 10-3 cm2 V-1 s-1. Various post fabrication processes were carried out to optimize the device performance. Controlled doping and moderate annealing have shown improvement in the device mobility by 10 folds and 2 folds respectively, yielding evidence for a hopping mechanism for charge transport in POMA. Two alternate gate dielectric layers for the OTFT were also considered; while a nonpolar low-K dielectric, polyethylene improved mobility; polar high-K dielectric, copolymer of vinylidene fluoride with trifluoroethylene had an adverse effect on mobility.
Almost Periodicity in Time of Solutions of the Toda Lattice
Creators: name: Binder, Ilia
name: Damanik, David
name: Lukic, Milivoje
name: VandenBoom, Tom
Publisher: name: arXiv
Year: 2016
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37K10 (Primary), 37K15, 39A24, 34C27 (Secondary)

description: We study an initial value problem for the Toda lattice with almost periodic initial data. We consider initial data for which the associated Jacobi operator is absolutely continuous and has a spectrum satisfying a Craig-type condition, and show the boundedness and almost periodicity in time and space of solutions.
description: 24 pages; new version better reflects current literature
In defense of radical empiricism
Creators: name: Riegel, Joseph Benjamin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: In this paper I evaluate arguments presented by Lawrence Bonjour, Christopher Peacocke, and George Bealer which purport to show that there as an indispensable theoretical need for a priori knowledge. Bonjour and Peacocke argue that views that deny a priori knowledge - which I call Radical Empiricist views - ultimately lead to radical forms of skepticism. Bealer argues that Radical Empiricism is incoherent in the sense that it is internally inconsistent. In this paper, I evaluate each of these arguments against Radical Empiricism and I attempt to show that each is unconvincing. The upshot of my discussion is that we have no compelling reason to posit a priori knowledge
Darboux Calculus
Creators: name: Aldi, Marco
name: McCleary, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Category Theory (math.CT)
subject: FOS: Mathematics

description: We introduce a formalism to analyze partially defined functions between ordered sets. We show that our construction provides a uniform and conceptual approach to all the main definitions encountered in elementary real analysis including Dedekind cuts, limits and continuity.
description: 18 pages, exposition improved
Scanning tunneling microscopy current from localized basis orbital density functional theory
Creators: name: Gustafsson, Alexander
name: Paulsson, Magnus
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a method capable of calculating elastic scanning tunneling microscopy (STM) currents from localized atomic orbital density functional theory (DFT). To overcome the poor accuracy of the localized orbital description of the wave functions far away from the atoms, we propagate the wave functions, using the total DFT potential. From the propagated wave functions, the Bardeen's perturbative approach provides the tunneling current. To illustrate the method we investigate carbon monoxide adsorbed on a Cu(111) surface and recover the depression/protrusion observed experimentally with normal/CO-functionalized STM tips. The theory furthermore allows us to discuss the significance of $s$- and $p$-wave tips.
description: 8 pages, 7 figures
The effects of explicitness of customization and level of choice on listener attitudes, behaviors and cognitions toward a customized music radio application
Creators: name: Weber, Justin Lynn
Publisher: name: University of North Carolina at Chapel Hill
Year: 2011

description: This thesis examines the effects of type of customization, specifically explicit and non-explicit customization, and level of choice on listener attitudes, behaviors, and cognitions. It attempts to make a modest contribution in this direction by examining decision-making and media effects when users encounter the interplay between the explicitness of the customization process and the number of choices offered in a customized radio application. It details the methods and results of an experiment (N=72) designed to examine the research questions. Results indicate that neither independent variable has significant effects user attitudes toward the application or willingness to pay for the application; however, there was a marginally significant main effect for level of choice on number of songs listened to. Theoretical and practical implications, limitations, and suggestions for future research are discussed.
Different definitions of conic sections in hyperbolic geometry
Creators: name: Chao, Patrick
name: Rosenberg, Jonathan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 51M10 (Primary) 53A35, 51N15 (Secondary)

description: In classical Euclidean geometry, there are several equivalent definitions of conic sections. We show that in the hyperbolic plane, the analogues of these same definitions still make sense, but are no longer equivalent, and we discuss the relationships among them.
description: 15 pages, 8 figures
Assessment and diagnosis of insomnia for clinical and research practice: a scoping review protocol
Creators: name: SZPALHER, ADRIANA
name: de Souza, Priscilla
name: Cardoso, Rosane
name: Weiss, Carleara
name: da Silva, Natália
name: da Silva Ramos, Luisa
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Life Sciences
subject: Research Methods in Life Sciences
subject: Evidence-Based Nursing
subject: Nursing Process
subject: Sleep Initiation and Maintenance Disorders
subject: Surveys and Questionnaires

description: 1- This is the first comprehensive scoping review to synthesize evidence of useful tools for insomnia assessment by nurses. 2- The proposed scoping review will be conducted in accordance to the Joanna Briggs Institute rigor methods, published in 2020, following the nine steps of scoping review process proposed by Peters et al (2020). 3- This protocol intends to use the recently published Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews Checklist, that will be detailing the flow from search, through source selection and presentation of the evidence. 4- An exhaustive review of literature will be conducted with support from a research librarian with expertise in scoping review search and in Insomnia in eight databases. 5- This is a scoping review, therefore, the quality of evidence, effectiveness of interventions/therapies and risk of bias will not be assessed. Beyond this, will be selected only publications written in Portuguese, English, Spanish and French due the shortage of studies in other languages.
Black Catholicism and Music in Durham, North Carolina: Praxis in a New Key
Creators: name: Shadle, Douglas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: This thesis explores the history, vitality, and theology of liturgical music at a predominantly black Catholic parish in Durham, North Carolina. The introductory chapter explores the relationship of the methods used, diagnoses problems in the subject matter, and critiques approaches taken by others. The second chapter examines the history of music at Holy Cross. Chapter III explores the current musical practices at Holy Cross using traditional ethnographic methods. The final chapter reveals how theology can enter into fruitful dialogue with musicology. This dialogue may lead to original interpretations of musical life performed in the context of faith. At Holy Cross, music does not simply reflect the theology of black Catholics articulated by professional scholars; the theological content of music sung there does not reside solely in the musical and verbal texts. Instead, the parishioners set into motion an authentically Catholic praxis that rejects materialism while embracing the beauty of living.
Discovery of a new extragalactic source population of energetic particles
Creators: name: Brown, Anthony M.
name: Bœhm, Celine
name: Graham, Jamie
name: Lacroix, Thomas
name: Chadwick, Paula
name: Silk, Joe
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of a statistically significant hardening in the Fermi-LAT $γ$-ray spectrum of Centaurus A's core, with the spectral index hardening from $Γ_{1}=2.73 \pm 0.02$ to $Γ_{1}=2.29 \pm 0.07$ at a break energy of ($2.6 \pm 0.3$) GeV. Using a likelihood analysis, we find no evidence for flux variability in Cen A's core lightcurve above or below the spectral break when considering the entire 8 year period. Interestingly, however, the first $\sim3.5$ years of the low energy lightcurve shows evidence of flux variability at the $\sim3.5 σ$ confidence level. To understand the origin of this spectral break, we assume that the low energy component below the break feature originates from leptons in Centaurus A's radio jet and we investigate the possibility that the high energy component above the spectral break is due to an additional source of very high energy particles near the core of Cen A. We show for the first time that the observed $γ$-ray spectrum of an Active Galactic Nucleus is compatible with either a very large localized enhancement (referred to as a spike) in the dark matter halo profile or a population of millisecond pulsars. Our work constitutes the first robust indication that new $γ$-ray production mechanisms can explain the emission from active galaxies and could provide tantalizing first evidence for the clustering of heavy dark matter particles around black holes.
description: 8 pages, 10 figures. Final version selected as an editor's suggestion and published in Phys. Rev. D. Updated version includes an additional reference that was missing from the final published version
DataManagementPlan_OpenScienceResearch
Creators: name: Ghiotto, Maddalena
name: Ghasempouri, Seyedali
name: Giacomini, Sebastiano
Publisher: name: Zenodo
Year: 2023
Subjects: open science
DOAJ
open access
OpenCitation
Social Science and Humanities
ERIH-PLUS

description: First version of Data Management Plan for the sake of out research on Open Access SSH journals coverage in OpenCitation Meta. The DMP currently has two datasets: One for the collected data to use in our research, another for the Software that we envision to write for data manipulation.
Spectral weight suppression in response functions of ultracold fermion-boson mixtures
Creators: name: Ji, Kai
name: Komnik, Andreas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the dynamical response of ultracold fermion-boson mixture in the Bogoliubov regime, where the interactions between fermionic impurities and bosonic excitations (phonons) are described by an effective Frohlich model under the Bogoliubov approximation. A characteristic suppression of the single-particle spectral weight is found in the small momentum region where the impurity band and phonon mode intersect. Using diagrammatic technique we compute the Bragg spectra as well as the momentum dependent force-force correlation function. We fnd that both of them are heavily affected by the spectral weight suppression effect at low impurity densities in both 1D and 2D systems. We show that the the spectral weight suppression feature in Bragg spectra, which was previously found in the quantum Monte Carlo simulations and which cannot be recovered by the random phase approximation, can be accurately reproduced with the help of vertex corrections.
description: 14 pages, 10 figures. Final version with a new title, some revisions and a new figure
DataManagementPlan_OpenScienceResearch
Creators: name: Ghiotto, Maddalena
name: Ghasempouri, Seyedali
name: Giacomini, Sebastiano
Publisher: name: Zenodo
Year: 2023
Subjects: open science
DOAJ
open access
OpenCitation
Social Science and Humanities
ERIH-PLUS

description: Second version of Data Management Plan for the sake of out research on Open Access SSH journals coverage in OpenCitation Meta. The DMP currently has two datasets: One for the collected data to use in our research, another for the Software that we envision to write for data manipulation.
Learning Discrete Bayesian Networks from Continuous Data
Creators: name: Chen, Yi-Chun
name: Wheeler, Tim Allan
name: Kochenderfer, Mykel John
Publisher: name: arXiv
Year: 2015
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Learning Bayesian networks from raw data can help provide insights into the relationships between variables. While real data often contains a mixture of discrete and continuous-valued variables, many Bayesian network structure learning algorithms assume all random variables are discrete. Thus, continuous variables are often discretized when learning a Bayesian network. However, the choice of discretization policy has significant impact on the accuracy, speed, and interpretability of the resulting models. This paper introduces a principled Bayesian discretization method for continuous variables in Bayesian networks with quadratic complexity instead of the cubic complexity of other standard techniques. Empirical demonstrations show that the proposed method is superior to the established minimum description length algorithm. In addition, this paper shows how to incorporate existing methods into the structure learning process to discretize all continuous variables and simultaneously learn Bayesian network structures.
Julia sets of Orthogonal polynomials
Creators: name: Christiansen, Jacob Stordahl
name: Henriksen, Christian
name: Pedersen, Henrik Laurberg
name: Petersen, Carsten Lunde
Publisher: name: arXiv
Year: 2016
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: For a probability measure with compact and non-polar support in the complex plane we relate dynamical properties of the associated sequence of orthogonal polynomials $\{P_n\}$ to properties of the support. More precisely we relate the Julia set of $P_n$ to the outer boundary of the support, the filled Julia set to the polynomial convex hull $K$ of the support, and the Green's function associated with $P_n$ to the Green's function for the complement of $K$.
description: 14 pages, 1 illustration
DataManagementPlan - Open Science for Social Science and Humanities: Open Access availability and distribution across disciplines and Countries in OpenCitations Meta
Creators: name: Ghiotto, Maddalena
name: Ghasempouri, Seyedali
name: Giacomini, Sebastiano
Publisher: name: Zenodo
Year: 2023
Subjects: open science
DOAJ
open access
OpenCitation
Social Science and Humanities
ERIH-PLUS

description: Final version of Data Management Plan for the research "Open Science for Social Science and Humanities: Open Access availability and distribution across disciplines and Countries in OpenCitations Meta" The DMP currently has two datasets: One for the dataset produced in our research, one for the research software created.