1,721,030 research outputs found
Measurement uncertainty role in the identification of the sources of periodic disturbances
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Large-needle percutaneous aspiration biopsy of the testicle in men with nonobstructive azoospermia
No full textTwo hundred thirteen testicular specimens of men with nonobstructive azoospermia were obtained by large-needle percutaneous aspiration biopsy. The mean values of the number of seminiferous tubules per histologic section, dimension, weight, and the fraction of biopsies with spermatogenetic cells (53, 0.2 x 0.3 x 0.62 cm, 385 mg, and 63%, respectively) were similar to those obtained by open or other surgical biopsy techniques that were used for assisted fertilization in the same type of patients
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
Percutaneous biopsy of the testicle: a mini-review with a proposal of flow chart for nonobstructive azoospermia.
No full textA general consensus on the role of testicular biopsy in non-obstructive azoospermia (NOA) is needed. This paper reviews and updates technical aspects and clinical performance of the percutaneous testicular biopsy techniques, in particular large-needle aspiration biopsy (LNAB), and proposes a flow chart for the management of NOA. The English literature and original data were reviewed or analyzed. Large-needle biopsy (LNB) includes large-needle cutting biopsy (LNCB) and large-needle aspiration biopsy (LNAB). LNCB usually requires scrotal incision for the insertion of relatively large needles. Fine-needle aspiration biopsy (FNAB) does not require surgical equipment or expertise, employs the smallest needles (23- to 20-gauge), and permits sperm cytologic detection. LNAB also does not require surgical equipment or expertise, employs needles of size from 20- to 18-gauge, is safe, and can be used for testicular histology and sperm recovery. An operative flow chart is proposed for the management of NOA in which FNAB, LNAB and open surgical biopsy are used for the optimal management of NOA
On cobot programming in industrial tasks: a test case
No full textCollaborative robots open the way to new applications where industrial robots currently cannot be used. They are perfect for craft, non-industrial environments or schools, and to people who don't know how to program robots, like artists, designers, or students. A simplified end-user programming of the cobots allows a more flexible deployment of these machines. Originally, they were developed to contain the effort, the complexity and the cost of the robotic solutions, allowing the adoption of robots specially by small and medium-sized enterprises. However, when a cobot has to be used in an industrial environment some issues arise. This article presents an industrial application that uses a collaborative robot. The focus is on the use of the latest methods for cobot programming and on how to deal with their limitations and advantages when exploiting them in an industrial application
Percutaneous biopsy of the testicle: a mini review with a proposal flow chart for non-obstructive azoospermia
No full textA Neural Network Approach for Mechanical Components Cost Estimation
No full textIn small and medium enterprises framework, where the range of mechanical components employed is wide, the cost estimation is challenging but trivial in order to be competitive. Due to the high number of variables that define a mechanical component a model driven approach is not possible especially in Small and Medium Enterprises (SMEs) where the same product can be processed byseveral suppliers. In this article a data-driven AI based approach is presented in order to overcome the afermentioned complexity of cost estimantion in SMEs framework
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
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