1,720,962 research outputs found
INTRODUCTION TO CHRONIC PROSTATITIS AND CHRONIC PELVIC PAIN SYNDROME (CP/CPPS)
No full textProstatitis is the most frequently diagnosed illness in men under 50, accounting for about 8% of all consultations with urologists. Estimates based on published studies suggest that the incidence of prostatitis in the population is somewhere between 4% and 11%.
In 1995 the National Institutes of Health (NIH) classified prostatitis into 4 main categories: 1) acute bacterial; 2) chronic bacterial; 3) pelvic pain syndrome; 4) asymptomatic inflammatory.
The aetiological agent most often involved is bacterial, particularly the category of Gram (-) bacteria, followed by Gram (+), chlamydiae and mycoplasms; however many cases of prostatitis are caused by bacteria which are difficult to isolate or by aetiopathogenic mechanisms which are immunological, neurological, psychosomatic or anatomical in nature.
An observational study was recently done on the Italian territory in order to estimate the incidence and risk factors of chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS). The disease incidence estimation was 13.8%. cigarette smoking, high caloric diet with low consumption of fruit and vegetables, constipation, meteorism, slow digestion, sexual relationship with more than one partner and coitus interruptus were more likely in CP/CPPS patients than in controls (p<0.001). CP/CPPS had a negative influence on sexual desire, erectile dysfunction and premature ejaculation (p<0.001). the Meares Stamey test was positive in 13.3% of patients and 2.9% of controls
Corporeal herniation after Nesbit plication with partial thickness shaving for congenital penile
No full textCorporeal herniation after Nesbit plication with partial thickness shaving for congenital penile curvature
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Hybrid simulation using mixed reality for interventional ultrasound imaging training
No full textPurpose : Ultrasound (US) imaging offers advantages over other imaging modalities and has become the most widespread modality for many diagnostic and interventional procedures. However, traditional 2D US requires a long training period, especially to learn how to manipulate the probe. A hybrid interactive system based on mixed reality was designed, implemented and tested for hand–eye coordination training in diagnostic and interventional US. Methods : A hybrid simulator was developed integrating a physical US phantom and a software application with a 3D virtual scene. In this scene, a 3D model of the probe with its relative scan plane is coherently displayed with a 3D representation of the phantom internal structures. An evaluation study of the diagnostic module was performed by recruiting thirty-six novices and four experts. The performances of the hybrid (HG) versus physical (PG) simulator were compared. After the training session, each novice was required to visualize a particular target structure. The four experts completed a 5-point Likert scale questionnaire. Results : Seventy-eight percentage of the HG novices successfully visualized the target structure, whereas only 45 % of the PG reached this goal. The mean scores from the questionnaires were 5.00 for usefulness, 4.25 for ease of use, 4.75 for 3D perception, and 3.25 for phantom realism. Conclusions : The hybrid US training simulator provides ease of use and is effective as a hand–eye coordination teaching tool. Mixed reality can improve US probe manipulation training
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
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