1,720,966 research outputs found
The Suspensory Ligament of the Clitoris: A New Anatomical and Histological Description
No full textBackground: The importance of the clitoris as an organ has been neglected by doctors and anatomists over the centuries. Its central role in female sexuality is widely recognized and respected. Although multiple studies have been conducted on the fundiform ligament of the penis, the literature concerning the suspensory ligament of the clitoris is extremely poor. The possibility to describe its complex structure may help us understand female orgasm and sexuality. Aim: Carrying out an anatomical and histological study about the supporting ligaments of the clitoris and in particular the suspensory ligament of the clitoris. Study Design: A total of 10 female cadavers were dissected specifically for this study. All the supporting structures of the clitoris were studied, photographed and measured. A histological study of these structures was also carried out. Results: The suspensory ligament of the clitoris is a multidimensional structure consisting of three anatomically and histologically distinct components. The superficial layer originates from the anterior abdominal wall, it is the anatomical extension of the fascia superficialis of the abdomen. It mainly consists of loosely organized elastic fibers, fibroblasts and few loosely organized collagen fibers. The intermediate component also originates from the anterior abdominal wall through the extensions of the abdominal aponeurosis that reach the body of the clitoris. It completely encloses the clitoral body and sends lateral extensions to the labia majora. Histologically, this layer mainly consists of well-organized collagen fibers as well as fibroblasts. The deep component is shorter and extends from the pubic symphysis to the knee of the clitoris and also connects the two crus to the pubic symphysis. It almost exclusively consists of very well organized collagen fibers. Conclusion: The suspensory ligament of the clitoris is a multidimensional structure that extends from the anterior abdominal wall to the clitoris. Unlike previous descriptions of the ligament supporting the clitoris, we observed that this structure consists of three anatomically and histologically distinct layers. These new anatomical considerations must be taken into account for any surgery affecting the subcutaneous tissues of the pubis and the abdomen as well as for reconstructive surgery of the clitoris and metoidioplasty. Botter C, Botter M, Pizza C, et al., The Suspensory Ligament of the Clitoris: A New Anatomical and Histological Description. J Sex Med 2022;19:12–20
A comparative assessment of the impact of climate change and energy policies on alpine hydropower
No full textScientific literature has mostly focused on the analysis of climate change impacts on hydropower operations, underrating the consequences of energy policies, for example, increase in Variable Renewable Sources (VRSs) and CO2 emission permit price, on hydropower productivity and profitability. We contribute a modeling framework to assess the impacts of different climate change and energy policies on the operations of hydropower reservoir systems in the Alps. Our approach is characterized by the following: (i) the use of a physically explicit hydrological model to assess future water availability; (ii) the consideration of electricity price scenarios obtained from an electricity market model accounting for the future projected European energy strategies; and (iii) the use of optimization techniques to design hydropower system operations in response to the projected changes. Through the application to the Mattmark system, a snow- and ice-dominated hydropower system in Switzerland, we demonstrate how the framework is effective in exploring the sensitivity of Alpine hydropower to changes in water availability and electricity price, in quantifying the uncertainties associated to these projections and in identifying the value of reoperation strategies. Results show that energy policies may have more significant impacts on hydropower operations than climate change and, as such, are worth considering in impact assessments studies. The reduction of water availability due to climate change is expected to induce a loss in electricity production down to −27% by 2050. Changes in electricity price, instead, may have up to 6 times stronger impact than climate change, leading to an increase in hydropower revenue up to about +181%.</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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