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  1. Article ; Online: Perron's method for p-harmonious functions

    David Hartenstine / Matthew Rudd

    Electronic Journal of Differential Equations, Vol 2016, Iss 123,, Pp 1-

    2016  Volume 12

    Abstract: We show that Perron's method produces continuous p-harmonious functions for 1<p<2. Such functions ... approximate p-harmonic functions and satisfy a functional equation involving a convex combination of the mean ... conditions for the existence of barriers are given. The p=1 situation, in which solutions to the Dirichlet ...

    Abstract We show that Perron's method produces continuous p-harmonious functions for 1<p<2. Such functions approximate p-harmonic functions and satisfy a functional equation involving a convex combination of the mean and median, generalizing the classical mean-value property of harmonic functions. Simple sufficient conditions for the existence of barriers are given. The p=1 situation, in which solutions to the Dirichlet problem may not be unique, is also considered. Finally, the relationship between 1-harmonious functions and functions satisfying a local median value property is discussed.
    Keywords Mean-value property ; median ; p-harmonic functions ; p-Laplacian ; p-harmonious functions ; Perron method ; Mathematics ; QA1-939 ; Science ; Q
    Language English
    Publishing date 2016-05-01T00:00:00Z
    Publisher Texas State University
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Pay deal favours consultants with longer service.

    Rudd, Matthew P

    BMJ (Clinical research ed.)

    2024  Volume 384, Page(s) q201

    MeSH term(s) Humans ; Consultants ; State Medicine ; Salaries and Fringe Benefits
    Language English
    Publishing date 2024-01-26
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 1362901-3
    ISSN 1756-1833 ; 0959-8154 ; 0959-8146 ; 0959-8138 ; 0959-535X ; 1759-2151
    ISSN (online) 1756-1833
    ISSN 0959-8154 ; 0959-8146 ; 0959-8138 ; 0959-535X ; 1759-2151
    DOI 10.1136/bmj.q201
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Bitcoin Is Full of Surprises

    Murray A. Rudd

    Challenges, Vol 14, Iss 27, p

    2023  Volume 27

    Abstract: Bitcoin has been embraced by many individuals with strong right-leaning views on freedom, property rights, and self-sovereignty. Among left-leaning progressives, Bitcoin is often quickly dismissed as irrelevant or a major source of carbon emissions. ... ...

    Abstract Bitcoin has been embraced by many individuals with strong right-leaning views on freedom, property rights, and self-sovereignty. Among left-leaning progressives, Bitcoin is often quickly dismissed as irrelevant or a major source of carbon emissions. Bitcoin seems, however, to be full of surprises. A rapidly advancing body of anecdotal evidence suggests that its adoption may affect causes important to progressives, mitigating greenhouse gas emissions, accelerating electrification of economies, alleviating poverty, and supporting human rights for people living under political repression, even though scientific confirmation is lagging. In this paper, I highlight how a Pragmatist perspective can be applied to Bitcoin, a technological and financial innovation that may well reshape how humans perceive and use money, preserve wealth, and structure governance. I first cover Bitcoin’s technological and financial fundamentals and some core concepts of Pragmatism, before outlining how Bitcoin might surprise progressives. Pragmatism offers a philosophical and political grounding for left-leaning “progressive Bitcoiners” who prioritize environmental and social well-being and view inclusive deliberative democracy as the preferred form of governance.
    Keywords Bitcoin ; deliberative democracy ; narratives ; Pragmatism ; public policy ; Technology ; T ; Science (General) ; Q1-390
    Language English
    Publishing date 2023-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Review: In primary prevention, BP-lowering treatment reduces major CV events in patients with SBP ≥ 140 mm Hg.

    Rudd, Peter

    Annals of internal medicine

    2018  Volume 168, Issue 4, Page(s) JC15

    MeSH term(s) Antihypertensive Agents ; Blood Pressure/drug effects ; Blood Pressure Determination ; Cardiovascular Diseases ; Humans ; Primary Prevention
    Chemical Substances Antihypertensive Agents
    Language English
    Publishing date 2018-02-16
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 336-0
    ISSN 1539-3704 ; 0003-4819
    ISSN (online) 1539-3704
    ISSN 0003-4819
    DOI 10.7326/ACPJC-2018-168-4-015
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  5. Article ; Online: Polymorphisms in the cytochrome P 450 genes CYP1A2, CYP1B1, CYP3A4, CYP3A5, CYP11A1, CYP17A1 , CYP19A1 and colorectal cancer risk

    Withey Laura / Penegar Stephen / Rudd Matthew / Sellick Gabrielle / Webb Emily / Bethke Lara / Qureshi Mobshra / Houlston Richard

    BMC Cancer, Vol 7, Iss 1, p

    2007  Volume 123

    Abstract: Abstract Background Cytochrome P 450 (CYP) enzymes have the potential to affect colorectal cancer ...

    Abstract Abstract Background Cytochrome P 450 (CYP) enzymes have the potential to affect colorectal cancer (CRC) risk by determining the genotoxic impact of exogenous carcinogens and levels of sex hormones. Methods To investigate if common variants of CYP1A2, CYP1B1, CYP3A4, CYP3A5, CYP11A1, CYP17A1 and CYP19A1 influence CRC risk we genotyped 2,575 CRC cases and 2,707 controls for 20 single nucleotide polymorphisms (SNPs) that have not previously been shown to have functional consequence within these genes. Results There was a suggestion of increased risk, albeit insignificant after correction for multiple testing, of CRC for individuals homozygous for CYP1B1 rs162558 and heterozygous for CYP1A2 rs2069522 (odds ratio [OR] = 1.36, 95% confidence interval [CI]: 1.03–1.80 and OR = 1.34, 95% CI: 1.00–1.79 respectively). Conclusion This study provides some support for polymorphic variation in CYP1A2 and CYP1B1 playing a role in CRC susceptibility.
    Keywords Neoplasms. Tumors. Oncology. Including cancer and carcinogens ; RC254-282 ; Internal medicine ; RC31-1245 ; Medicine ; R ; DOAJ:Oncology ; DOAJ:Medicine (General) ; DOAJ:Health Sciences
    Language English
    Publishing date 2007-07-01T00:00:00Z
    Publisher BioMed Central
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: A Call for More Rigor in Science and Health Communication

    Rima E. Rudd

    International Journal of Environmental Research and Public Health, Vol 19, Iss 1825, p

    2022  Volume 1825

    Abstract: Successful dissemination of scientific knowledge relies on the ability of the writer, speaker, and designer to provide information and data that is both available and accessible to the audience for whom it is intended. Scientific rigor, uniformly applied ...

    Abstract Successful dissemination of scientific knowledge relies on the ability of the writer, speaker, and designer to provide information and data that is both available and accessible to the audience for whom it is intended. Scientific rigor, uniformly applied to the development of medicines, products, and devices must be applied, as well, to communications—spoken, written, posted, or displayed. Rigorous development and design protocols call for formative research data gathering, careful pilot testing with members of the intended audience, needed revisions, and rigorous assessments. Guidelines and tools developed for health literacy applications can be adopted and adapted for environmental health research and educational efforts in the design of questionnaires, instructions, education and report back materials, as well as for public discourse.
    Keywords environmental health literacy ; health literacy ; formative research ; Medicine ; R
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: 100 Important Questions about Bitcoin’s Energy Use and ESG Impacts

    Murray A. Rudd

    Challenges, Vol 14, Iss 1, p

    2022  Volume 1

    Abstract: Bitcoin critics have argued that energy-intensive Bitcoin production and adoption will exacerbate global warming. Conversely, Bitcoin advocates have been dismayed by critics’ apparent lack of willingness to scrutinize Bitcoin’s potential role in helping ... ...

    Abstract Bitcoin critics have argued that energy-intensive Bitcoin production and adoption will exacerbate global warming. Conversely, Bitcoin advocates have been dismayed by critics’ apparent lack of willingness to scrutinize Bitcoin’s potential role in helping to improve the economics of renewable energy investments, reduce net emissions from methane venting and flaring, increase electricity grid efficiency, and provide higher-order environmental, social, and governance (ESG) benefits. Given the disparate views, there is a pressing need to identify key knowledge needs regarding Bitcoin’s net energy use, carbon emissions, and direct and indirect ESG impacts. I used a variation on the ‘key questions’ horizon scanning approach to identify 100 questions that, if answered, could help provide credible evidence to support policymakers’, investors’, and research funders’ decision-making on issues relating to the impact of Bitcoin production and adoption. The questions are distributed across 13 themes (ranging from energy use to social impacts). The breadth of knowledge required to answer key questions highlights the need to build research capacity, encourage collaborative cross-sectoral and -disciplinary research, and develop a prioritized research agenda. Defensible evidence for investors, regulators, and policymakers needs to consider Bitcoin’s complex net impacts on energy use and environmental, social, and governance benefits.
    Keywords Bitcoin ; energy transition ; ESG ; horizon scan ; key questions ; research priorities ; Technology ; T ; Science (General) ; Q1-390
    Subject code 306
    Language English
    Publishing date 2022-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Characterizing Density and Spatial Distribution of Trap States in Ta₃N₅ Thin Films for Rational Defect Passivation

    Rudd, Peter N. / Tereniak, Stephen J. / López, René

    ACS Applied Materials & Interfaces. 2023 Feb. 03, v. 15, no. 6 p.7969-7977

    2023  

    Abstract: Tantalum nitride (Ta₃N₅) has gained significant attention as a potential photoanode material, yet it has been challenged by material quality issues. Defect-induced trap states are detrimental to the performance of any semiconductor material. Beyond ... ...

    Abstract Tantalum nitride (Ta₃N₅) has gained significant attention as a potential photoanode material, yet it has been challenged by material quality issues. Defect-induced trap states are detrimental to the performance of any semiconductor material. Beyond influencing the performance of Ta₃N₅ films, defects can also accelerate the degradation in water during desired electrochemical applications. Defect passivation has provided an enormous boost to the development of many semiconductor materials but is currently in its infancy for Ta₃N₅. This is in part due to a lack of experimental understanding regarding the spatial and energetic distribution of trap states throughout Ta₃N₅ thin films. Here, we employ drive-level capacitance profiling (DLCP) to experimentally resolve the spatial and energetic distribution of trap states throughout Ta₃N₅ thin films. The density of deeper energetic traps is found to reach ∼2.5 to 6 × 10²² cm-³ at the interfaces of neat Ta₃N₅ thin films, over an order of magnitude greater than the bulk. In addition to the spatial profile of deep trap states, we report neat Ta₃N₅ thin films to be highly n-type in nature, owning a free carrier density of ∼9.74 × 10¹⁷ cm-³. This information, coupled with the present understanding of native oxide layers on Ta₃N₅, has facilitated the rational design of a targeted passivation strategy that simultaneously provides a means for catalyst immobilization. Loading catalyst via silatrane moieties suppresses the density of defects at the surface of Ta₃N₅ thin films by two orders of magnitude, while also reducing the free carrier density of films by over one order of magnitude, effectively dedoping the films to ∼2.40 × 10¹⁶ cm-³. The surface passivation of Ta₃N₅ films translates to suppressed defect-induced trapping and recombination of photoexcited carriers, as determined through absorption, photoluminescence, and transient photovoltage. This illustrates how developing a deeper understanding of the distribution and influence of defects in Ta₃N₅ thin films has the potential to guide future works and ultimately accelerate the integration and development of high-performance Ta₃N₅ thin film devices.
    Keywords absorption ; capacitance ; catalysts ; electrochemistry ; films (materials) ; nitrides ; photoluminescence ; semiconductors ; tantalum ; tantalum nitride ; defect passivation ; drive-level capacitance profiling ; hybrid photoelectrode ; silatrane ; surface modification ; oxynitride
    Language English
    Dates of publication 2023-0203
    Size p. 7969-7977.
    Publishing place American Chemical Society
    Document type Article ; Online
    ISSN 1944-8252
    DOI 10.1021/acsami.2c19275
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: Correction: Clinical epidemiology and outcomes of community acquired infection and sepsis among hospitalized patients in a resource limited setting in Northeast Thailand: A prospective observational study (Ubon-sepsis).

    Hantrakun, Viriya / Somayaji, Ranjani / Teparrukkul, Prapit / Boonsri, Chaiyaporn / Rudd, Kristina / Day, Nicholas P J / West, T Eoin / Limmathurotsakul, Direk

    PloS one

    2024  Volume 19, Issue 3, Page(s) e0301218

    Abstract: This corrects the article DOI: 10.1371/journal.pone.0204509.]. ...

    Abstract [This corrects the article DOI: 10.1371/journal.pone.0204509.].
    Language English
    Publishing date 2024-03-21
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0301218
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  10. Article ; Online: A comparison of patient-reported outcomes in patients undergoing abdominal wall repair with either synthetic or biosynthetic mesh: a pilot study.

    Kulkarni, G V / Elliott, Z / Rudd, R / Barnes, D / Hammond, T M

    Hernia : the journal of hernias and abdominal wall surgery

    2024  

    Abstract: ... with a biosynthetic repair had a significant lower CCS at ≥ 18 months (p < 0.05).: Conclusion: After VIHR, patients ...

    Abstract Purpose: Repair of midline ventral incisional hernias (VIHR) requires mesh reinforcement. Mesh types can be categorised into synthetic, biosynthetic, or biological. There is a lack of evidence to support one type of mesh over another. The aim of this pilot study was to compare mesh sensation in patients having undergone elective open repair with synthetic or biosynthetic mesh.
    Methods: Four years of prospectively collected data were retrospectively reviewed on 40 patients who had undergone VIHR, using either biosynthetic or synthetic mesh placed in the retromuscular plane. The decision on type of mesh used was governed by patient characteristics. Patients were invited to complete the Carolinas Comfort Scale (CCS) questionnaire, the higher the score indicating a poorer quality of life. The maximum length of follow-up was 36 months.
    Results: Twenty patients received permanent synthetic and 20 biosynthetic mesh. There was no clinical evidence of hernia recurrence in either group in the short to medium term. Overall, 97% (39/40) patients reported an average of either no or mild symptoms (mean CCS score 17.9 of 115). Patients with a biosynthetic repair had a significant lower CCS at ≥ 18 months (p < 0.05).
    Conclusion: After VIHR, patients have low CCS scores, indicating good quality of life outcomes, in the short to medium term irrespective of the mesh used. However, biosynthetic mesh had lower CCS scores in the medium term. This may help surgeons and patients make better informed decisions about which mesh to use in their individual circumstances.
    Language English
    Publishing date 2024-03-28
    Publishing country France
    Document type Journal Article
    ZDB-ID 1388125-5
    ISSN 1248-9204 ; 1265-4906
    ISSN (online) 1248-9204
    ISSN 1265-4906
    DOI 10.1007/s10029-024-03022-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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