1,720,994 research outputs found
E.P.H. gestosis: New prospects for prevention and treatment
No full textIn the present study 90 multiple pregnancies were examined. These were subdivided on the basis of the number of embryos involved (74 twins, 10 triplets, 6 quintuplets) and on whether they were followed at our clinic for the entire pregnancy or not. In each group we analysed certain variables, calculating the respective mean values and standard deviations. We used the ANOVA test to discriminate the eventual differences in the means of the variables analysed, operating a p < 0.05 significance value. In addition, significant differences were analysed by the test of Contrasts (Scheffe F-test). The concept that emerged from the data investigated is that careful management of these pregnancies, carried out in high-level structures, can reduce the incidence of complications on both the maternal and fetal side and thus prevent "minimal brain damage" in the newborn
Monitoring of pregnancies induced with I.V.F. - E.T. and/or G.I.F.T.
No full textThe diffusion of in vitro fertilization (IVF) and of the transfer of the gamete into the Fallopian tube (GIFT) persuaded the Authors to examine attentively the possible problems arising from these induced pregnancies. From July 1986 until December 1990, 80 pregnancies induced with IVF-ET and/or GIFT (49 singletons, 28 twins, 2 triplets and 1 quadruplet) were monitored. The Authors discuss both the maternal and the fetal complications. The data which emerge from the study suggest that these patients should be monitored attentively during the entire gestational period because induced pregnancies with assisted procreation should be considered 'high risk pregnancies' even if these risks are only potential
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
Psychological aspects of therapeutic abortion after early prenatal diagnosis.
No full textThe early discovery of a fetal pathology creates a "crisis" situation fraught with psychic problems for the couple who must live through it. The Authors observed a group of patients in the second trimester of pregnancy. They had all requested therapeutic abortion since serious malformation of the fetus had been confirmed. By means of a questionnaire constructed for the purpose, certain characteristics of fetal malformation and of pregnancy were evidenced, as well as the way these were experienced by the patients. The immediate and delayed reactions to the diagnosis of malformation were also studied, as was the experience lived when faced with the choice of abortion.
The psychological aspects of therapeutic abortion after early prenatal diagnosis of a fetal pathology among 50 2nd trimester (16th-22nd week) patients at the University of Rome obstetric clinic are described. A crises is experienced after discovery of a fetal pathology (e.g., chromosomic, dismetabolic, infectious, and multifactorial). An open ended questionnaire format was used to obtain information on the malformations and to solicit responses to the malformation and the choice to abort. Respondents' average age was 32, and all educational levels and job types were represented. 80% of malformations had a low recurrence risk of 2-3%, and 20% had a high risk of 25-50%. 42% were planned pregnancies and 36% were desired; 22% occurred by chance. 44% had previous healthy children. 22% were in a 1st pregnancy and 10% were in a 2nd pregnancy following an abortion. 14% had both healthy and handicapped children. Visual representation of the expected child was clear to 44%, unclear to 44%, and unimaginable to 12%. Only 26% had programmed a future for the child. 82% had a clear view of themselves as mothers, while 18% were vague. 76% had confident maternal attitudes toward child rearing. 76% considered the pregnancy to be organically easy. 16% felt it was decidedly difficult, and 8% had some difficulty. 60% felt emotionally comfortable with the pregnancy. 38% felt ambivalent, of which 80% had high-risk pregnancies. After notification of the malformation or suspicion, 90% felt emotionally aroused. 22% felt anxiety, particularly if the extent and gravity were not indicated; 18% felt amazement and 8% rejection. 14% rebelled. Examples of the exact responses are given. The reasons for choosing abortion are also given, ranging from being against abortion, but finding the malformation to be incompatible with life, to not wanting to inflict the consequences on other family members. 80% considered abortion as an option to limit the frustration and disappointment to a short period in their lives and to prevent repercussions. After the decision is made, the focus turns to the immediate aspects of the abortion
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