124,740 research outputs found
On Monami modes and scales of a flexible vegetation array in a laminar boundary layer
No full textFlexible aquatic vegetation exists widely in nature and serves multiple hydro-environmental functions mainly through fluid–structure interactions. The waving motion of vegetation arrays, known as Monami, is predominantly governed by Kelvin–Helmholtz (KH) instability, and its characteristic scales, such as wave height and wavelength, are still being explored. In this paper, the interactions between a large array of flexible vegetations and a laminar boundary-layer flow are investigated using direct numerical simulation. The parameters used are the Reynolds number Re = 400, mass ratio beta=1.0, bending rigidity gamma=0.04–0.22, and gap distance d=0.4–1.6. A low frequency in Monami is found to be related to the fluctuation frequency of the onset position of the KH instability, which leads to the identification of four different Monami modes: regular Monami, quasi-regular Monami A, quasi-regular Monami B, and irregular Monami. The influences of the bending rigidity and gap distance on the Monami modes, KH instability onset position, and Monami characteristic scales are discussed. It was found that the causes of spatial and temporal variations in the characteristic scales of Monami vary depending on the mode. In the regular Monami mode, these variations result from the evolution of the KH vortex. In the quasi-regular Monami A mode, they are strongly affected by the shifting of the onset position of the KH instability. In the other two modes, these variations are caused by a combination of the fluctuation in the KH instability onset position and the complex interaction between vortices.</p
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On Monami modes and scales of a flexible vegetation array in a laminar boundary layer
No full textFlexible aquatic vegetation exists widely in nature and serves multiple hydro-environmental functions mainly through fluid–structure interactions. The waving motion of vegetation arrays, known as Monami, is predominantly governed by Kelvin–Helmholtz (KH) instability, and its characteristic scales, such as wave height and wavelength, are still being explored. In this paper, the interactions between a large array of flexible vegetations and a laminar boundary-layer flow are investigated using direct numerical simulation. The parameters used are the Reynolds number Re = 400, mass ratio β = 1.0, bending rigidity γ = 0.04–0.22, and gap distance d = 0.4–1.6. A low frequency in Monami is found to be related to the fluctuation frequency of the onset position of the KH instability, which leads to the identification of four different Monami modes: regular Monami, quasi-regular Monami A, quasi-regular Monami B, and irregular Monami. The influences of the bending rigidity and gap distance on the Monami modes, KH instability onset position, and Monami characteristic scales are discussed. It was found that the causes of spatial and temporal variations in the characteristic scales of Monami vary depending on the mode. In the regular Monami mode, these variations result from the evolution of the KH vortex. In the quasi-regular Monami A mode, they are strongly affected by the shifting of the onset position of the KH instability. In the other two modes, these variations are caused by a combination of the fluctuation in the KH instability onset position and the complex interaction between vortices
Correction to: Autologous cell therapy for ischemic diabetic foot: a meta-analysis of randomized controlled trials for the development of the Italian guidelines for the treatment of diabetic foot syndrome (Acta Diabetologica, (2024), 10.1007/s00592-024-02393-z)
No full textIn the original version of this article, the author name ‘Matteo Monami’ at affiliation ‘Azienda Ospedaliero Universitaria Careggi and University of Florence, Florence, Italy' was missing from the author[consortium] list. The original article has been corrected
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Innovative interfaces in MonAMI
No full textThis demo paper presents an early version of the Reminder, a prototype ECA developed in the European project MonAMI, which aims at "mainstreaming accessibility in consumer goods and services, using advanced technologies to ensure equal access, independent living and participation for all". The Reminder helps users to plan activities and to remember what to do. The prototypemerges mobile ECA technology with other, existing technologies:Google Calendar and a digital pen and paper. The solution allows users to continue using a paper calendar in the manner they are used to, whilst the ECA provides notifications on what has been written in the calendar. Users may ask questions such as "When was I supposed to meet Sara?" or "What's my schedule today"?</p
PCSK9 Inhibitor Therapy. A systematic review and meta-analysis of metabolic and cardiovascular outcomes in patients with diabetes
No full textAims: Pro-protein convertase subtilisin/kexin type 9 (PCSK9) inhibitors bring about a wide reduction in low-density lipoprotein (LDL) cholesterol, greater than that of other lipid-lowering agents. The aim of this metanalysis was assessment of the effects of PCSK9 inhibitors on glucose metabolism, LDL cholesterol, cardiovascular morbidity and mortality in individuals with and without diabetes. Materials and methods: A Medline and Clinicaltrials.gov search for eligible studies published before 1 December 2017 was performed. All randomized trials comparing PCSK-9 inhibitors with placebo or active drugs were included. Primary endpoints included (a) incident diabetes, fasting glucose and HbA1c, (b) LDL cholesterol at endpoint in patients with diabetes and in the total sample, and (c) major cardiovascular events (MACE) and mortality in individuals with and without diabetes. Results: A total of 38 trials was identified. The risk of incident diabetes was not increased by PCSK-9 inhibitors, vs placebo or any comparator. The reduction in LDL cholesterol vs placebo in patients with diabetes was 52.6 [41.3;63.8] mg/dL; the corresponding figure for all patients was 66.9 [62.4;71.3] mg/dL. Meta-regression analysis showed an inverse correlation between proportion of patients with diabetes and drug effect on LDL cholesterol in trials vs ezetimibe, but not in those vs placebo. In studies reporting data on MACE and mortality separately for individuals with and without diabetes, the effect of PCSK-9 did not appear to be affected by diabetes. Conclusion: PCSK-9 inhibitors do not affect glucose metabolism. Their efficacy on LDL cholesterol and MACE in patients with diabetes does not seem to be very dissimilar to that observed in non-diabetic participants
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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