1,720,971 research outputs found
Serum progesterone level on the day of oocyte retrieval correlates with the ovarian response but not predict pregnancy rate
No full textOBJECTIVE: The aim of this study was to prospectively evaluate the pre- dictive value of serum progesterone levels as measured on the day of oocyte retrieval on pregnancy rate and stimulation response.
DESIGN: Retrospective study.
MATERIALS AND METHODS: We prospectively evaluated 79 consec- utive patients treated by FIVET/ICSI. Serum progesterone was measured the day of oocyte retrieval. The mean age of patients was 38,1 and mean BMI was 22,3. All patients underwent gonadotropins ovarian stim- ulation and pituitary suppression with either GnRh agonist or antagonist. Pregnancy was defined as beta HCG levels greater than 5 UI two weeks after the oocyte retrieval and vital embryo visible on trans vaginal ultra- sound at 6 weeks gestation. The date were than analyzed with respect to serum progesterone levels on the day of oocyte retrieval with the chi- squared test
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
Can salin infusion sonohysterography (SIS) replace diagnostic hysteroscopy in the uterine cavity evaluation of infertile women?
No full textOBJECTIVE: To evaluate the role of sonohysterography in the diagnosis of intrauterine pathology in comparison to hysteroscopy.
DESIGN: Prospective study using sonohysterography as a first step exam- ination of uterine cavity in a group of infertile women during 18 months.
MATERIALS AND METHODS: 444 sonohysterography were per- formed from January 2005 to april 2007. The mean age of patients was 35 (range 23-42). In 23 patients the exam was not possible due to cervical stenosis (5,2%). The sonohysterography was performed between 10-15 day of the menstrual cycle. If a diagnosis of possible intrauterine anomaly was made at sonohysterography, hysteroscopy was scheduled. Comparative re- sults of sonohysterography and hysteroscopy has been analyzed. Positive predictive value (PPV) and specificity of sonohysterography have been calculated.
RESULTS: In 58 of 421 patients (15,4%), sonohysterography showed an abnormal uterine cavity: 36 polyps (8,5%), 3 submucous myomas (0,7%), 18 uterine malformation (4,3%), 1 synechiae (0,2%), 7 non accessible cavity (1,7%). Among these patients, 51 underwent diagnostic hysteroscopy. Hys- teroscopy revealed 34 polyps, 2 myomas, 1 synechiae, 9 uterine malforma- tion and 3 normal cavity. PPV of sonohysterography was 94% for polyps detection, 100% for myomas, 100% for synechiae, 90% for uterine malfor- mation. Overall PPV has been 94%.
CONCLUSIONS: Sonohysterography is a simple, low cost and well toler- ated procedure. Diagnostic accuracy and the low false positive rate suggest sonohysterography as a routine test in the evaluation of the uterine cavity of infertile women
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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