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Perbedaan Morfologi Spermatozoa Tikus Putih (Rattus norvegicus) Jantan Pasca Induksi Berbagai Model Stres Sleep Deprivation
Get PDFStres akibat paradoxical sleep deprivation (PSD) dan total sleep deprivation (TSD) dapat menyebabkan peningkatan stres oksidatif, mengaktivasi HPA, gangguan pada HPG yang berhubungan dengan infertilitas. Sleep recovery (SR) dapat menurunkan produksi radikal bebas dengan mekanisme pemulihan kadar antioksidan sehingga dapat memperbaiki fungsi reproduksi pria. Tujuan : Mengetahui perbedaan morfologi spermatozoa pada tikus putih (Rattus norvegicus) jantan pasca induksi berbagai model stres sleep deprivation Metode : Penelitian ini merupakan penelitian eksperimental dengan desain posttest only with control group. Tiga puluh ekor tikus putih dibagi secara acak menjadi 5 kelompok yakni 1 (kontrol sehat), 2 (PSD 20 jam/ hari selama 5 hari), 3 (TSD 24 jam/ hari selama 5 hari), PSD + SR (20 jam/ hari selama 5 hari dilanjutkan dengan sleep recovery selama 5 hari berikutnya), dan TSD + SR (24 jam/ hari selama 5 hari dilanjutkan dengan sleep recovery selama 5 hari berikutnya) Hasil : Rerata persentase morfologi spermatozoa normal terendah terdapat pada kelompok 3 ( 13,00 ± 2,91), diikuti kelompok 5 (14,40 ± 2,70), kelompok 2 (18,00 ± 1,58), kelompok 4 (21,00 ± 1,58), dan kelompok tertinggi adalah kelompok 1 (22,60 ± 1,14). Uji One Way ANOVA menunjukkan terdapat perbedaan rerata yang signifikan (p<0,05). Uji Post-Hoc Tukey menunjukkan adanya perbedaan rerata yang signifikan (p<0,05) pada kelompok I-II, I-III, I-IV, I-V, II-III, III-IV, dan IV-V. Kesimpulan : Terdapat perbedaan signifikan rerata persentase morfologi normal spermatozoa pada tikus putih (Rattus norvegicus) jantan pasca induksi berbagai model stres sleep deprivatio
Hubungan Diferensiasi Diri Dan Keberfungsian Keluarga Dengan Sikap Terhadap Pernikahan Pada Individu Emerging Adulthood Di Tangerang
No full textThis study aims to examine the relationship between self-differentiation, family functioning, and attitudes toward marriage among Tangerang’s early adults. The study employed a quantitative approach with a correlational design. The sample consisted of 424 individuals aged 18–25 years residing in Tangerang (Tangerang, Tangerang Regency, and South Tangerang). The findings revealed a significant positive relationship between self-differentiation and attitudes toward marriage (0.689), as well as between family functioning and attitudes toward marriage (0.548). Based on these findings, it can be concluded that the higher the level of self-differentiation or family functioning in individuals, the more positive their attitudes toward marriage. In addition, differences were found between the research results and field phenomena. The presumed negative shift in attitudes toward marriage among individuals in the transition to adulthood did not occur significantly, as the study showed that the majority of early adults in Tangerang hold neutral to positive attitudes toward marriage. Penelitian ini bertujuan mencari tahu hubungan antara diferensiasi diri, keberfungsian keluarga dengan sikap terhadap pernikahan pada individu dewasa awal di Tangerang. Penelitian ini menggunakan pendekatan kuantitatif dengan desain korelasi. Sampel terdiri dari 424 individu berusia 18–25 tahun yang berdomisili di Tangerang (Kota Tangerang, Kabupaten Tangerang dan Kota Tangerang Selatan). Hasil penelitian menunjukkan bahwa terdapat hubungan yang signifikan secara positif antara diferensiasi diri dengan sikap terhadap pernikahan (0.689) dan keberfungsian keluarga dengan sikap terhadap pernikahan (0.548). Berdasarkan penemuan tersebut, dapat disimpulkan bahwa semakin tinggi diferensiasi diri ataupun keberfungsian keluarga pada individu, maka semakin positif sikap terhadap pernikahan. Selain itu, ditemukan pula perbedaan antara hasil penelitian dengan fenomena lapangan. Pergeseran sikap individu masa transisi menuju dewasa terhadap pernikahan ke arah yang cenderung negatif tidak terjadi signifikan, karena hasil penelitian menunjukkan bahwa mayoritas individu masa transisi menuju dewasa di Tangerang memiliki sikap yang cenderung netral dan positif terhadap pernikahan
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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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