1,720,954 research outputs found
Standarisasi simplisia daun andong merah (Cordyline fruticosa L.) dari tiga daerah berbeda
Get PDFTanaman andong merah (Cordyline fruticosa L.) merupakan tanaman yang banyak digunakan sebagai obat tradisional. Bagian daun dari tanaman andong merah banyak digunakan sebagai obat tradisional salah satunya yang telah beredar yaitu sebagai obat wasir. Berdasarkan penelitian sebelumnya, belum tersedia acuan mengenai standarisasi daun andong merah. Tujuan dari penelitian ini adalah menetapkan profil mikroskopis dan makroskopis daun andong merah, serta menetapkan profil standarisasi spesifik dan non spesifik dari simplisia daun andong merah. Simplisia daun andong merah didapatkan dari tiga daerah yang berbeda (Batu, Bogor, dan Solo). Penetapan profil standarisasi spesifik meliputi identitas, makroskopis, mikroskopis, penetapan kadar sari larut, skrining fitokimia, penetapan profil kromatogram secara KLT, penetapan profil spektrum dengan spektrofotometer IR dan UV-Vis, penetapan kadar flavonoid, dan fenol. Penetapan profil standarisasi non spesifik meliputi penetapan kadar abu total, kadar abu larut air, kadar abu tak larut asam, susut pengeringan, pH dan persen bahan asing. Berdasarkan hasil penelitian disimpulkan bahwa daun andong merah memiliki kandungan senyawa flavonoid,alkaloid, fenol, kuinon, saponin, tanin, steroid dan triterpenoid. Profil spektrum infrared (IR) dari tiga daerah menunjukkan adanya gugus fungsi O-H (alkohol), C-H (alkana), C=C aromatik, dan C-N. Hasil penetapan standarisasi simplisia dau andong merah menunjukkan kadar sari larut air >28%, kadar sari larut etanol >21%, kadar abu total 0,24% b/b, kadar fenol total >0,26% b/b
Pengaruh Faktor-Faktor Manajemen Stres Dalam Meningkatkan Kinerja Atlet Pencak Silat
Get PDFPenelitian ini bertujuan untuk mengetahui pengaruh faktor-faktor manajeman stres terhadap fokus dan konsentrasi atlet dalam meningkatkan kinerja atlet pencak silat. Strategi manajemen stres terdiri dari 5 (lima) strategi yang dapat mengelola stres sebagai manajemen stres yaitu: meluangkan waktu atau kesadaran diri, dukugan sosial, pola pikir positif, peneglolaan tuntutan.
Penelitain ini merupakan jenis penelitian deskiptif statistik dengan menggunakan uji faktor. Metode penelitian ini menggunakan metode survey. Tehnik pengambilan data penelitian ini dengan menggunakan angket atau kuisoner. Sampel dalam penelitian ini menggunakan sampel total dimana populasi dijadikan sampel, sampel penelitian ini adalah atlet IPSI Kota Yogyakarta dengan jumlah 30 atlet. Pengumpulan kelakyakan dilakukan dengan pengisian validasi oleh validator yaitu dosen Fakultas Ilmu Keolahragaan dan Kesehatan dan juga ahli dalam bidang tersebut.
Hasil penelitian menunjukkan bahwa manajemen stres atlet pencak silat berada pada kategori cukup dengan persentase 46,67%. Banyak atlet sudah cukup baik dalam mengelola stres, masih ada ruang untuk perbaikan. Beberapa faktor yang mungkin berpengaruh adalah frekuensi latihan 5-8 kali per minggu yang mungkin belum cukup intensif, serta pengalaman 11 kali bertanding yang mungkin belum memberikan paparan stres yang cukup konsisten. Pengelolaan tuntutan dan teknik relaksasi, masing-masing dengan persentase 36,67%, menunjukkan bahwa atlet mungkin belum sepenuhnya menguasai teknik ini. Pola pikir positif dengan persentase 43,33% juga perlu ditingkatkan. Dukungan sosial, meskipun cukup baik dengan persentase 36,67%, mungkin belum sepenuhnya membantu atlet dalam mengelola stres. Secara keseluruhan, atlet masih memerlukan pendekatan yang lebih terstruktur dan intervensi tambahan untuk meningkatkan manajemen stres mereka
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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