1,721,095 research outputs found
EVALUASI METODE FUZZY TIME SERIES CHENG DAN RUEY CHYN TSAUR
Full text linkPenelitian ini berfokus terhadap evaluasi metode Logika Fuzzy Time Series (FTS) Cheng dan Fuzzy Time Series (FTS) Logika Ruey Chyn Tsaur yang diterapkan pada data Nilai Tukar Petani (NTP). Data NTP yang digunakan adalah data NTP bulanan Provinsi Jawa Tengah dari periode 2008-2020. Evaluasi metode menggunakan Mean Square Error (MSE) dan Mean Percentage Error (MAPE) untuk melihat ketepatan/akurasinya. Hasil analisis menunjukkan bahwa peramalan FTS Logika Cheng dan FTS Logika Ruey Chyn Tsaur keduanya memiliki pola yang hampir sama dengan pola data sebenarnya. Hasil MSE dan MAPE dari FTS logika Cheng adalah 0,3331 dan 0,43%, sedangkan hasil MSE dan MAPE logika Ruey Chyn Tsaur FTS adalah 0,4054 dan 0,47%. Peramalan periode berikutnya menggunakan FTS logika Cheng sebesar 101,1711 dan FTS logika Ruey Chyn Tsaur sebesar 101,4112
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
Perbandingan Metode Fuzzy Times Series Cheng dan Fuzzy Times Series Markov Chain dalam Memprediksi Tingkat Pengangguran Terbuka di Bali
No full textPenelitian ini bertujuan menemukan model untuk tingkat pengangguran terbuka di Bali dengan Fuzzy Times series Cheng (FTS Cheng) dan Fuzzy Times series Markov Chain (FTS Markov Chain) serta membandingkan tingkat akurasi kedua model tersebut. Jenis penelitian ini adalah jenis penelitian kuantitatif. Data tingkat pengangguran terbuka di Bali yang digunakan sebanyak 34 dari periode Februari 2006 sampai dengan Agustus 2021. Dari 34 data kemudian dibagi menjadi dua dengan proporsi 30% data latih dan 70% data uji. Tahapan penelitian yang dilakukan dengan menghitung FTS Cheng dan FTS Markov Chain pada data latih kemudian dilanjutkan pada data uji. Selanjutnya model FTS Cheng dan FTS Markov Chain dihitung akurasinya dengan MAPE (Mean Absolute Percentage Error),RMSE (Root Mean Square Error) dan Confusion Matrix (akurasi,presisi,recall). Hasil MAPE yang didapatkan adalah FTS Cheng sebesar 18.43% dan FTS Markov Chain sebesar 31.19%. Kemudian hasil RMSE yang didapatkan dari FTS Cheng dan FTS Markov Chain secara berturut-turut adalah 0.88 dan 0.63. Pada pengujian menggunakan Confusion Matrix pada FTS Ceng didapatkan hasil akurasi, presisi, recall secara berturut-turut adalah 61.90%,41.22% dan 44.35%. Sedangkan untuk FTS Markov Chain mendapatkan hasil pengujian sebesar 61.90%,49.17% dan 48.75% untuk akurasi, presisi dan recall. Jadi Fuzzy Time Series Markov Chain lebih baik dibandingkan dengan model Fuzzy Time Series Cheng di dua metode pengujian keakuratan yaitu pada RMSE dan Confusion Matrix (presisi dan recall). Hal ini disebabkan karena perbedaan pembagian kelas serta perhitungan yang berbeda
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
Ultrashort pulse generation in modeless laser cavity
No full textWe demonstrate experimentally that random phase modulation of an erbium-doped fiber ring-laser by an intra-cavity electro-optic phase modulator did not inhibit ultrashort-pulse operation. Stable and self-starting ultrashort-pulse operation with a single pulse circulating in the cavity was achieved even when the phase modulator was driven with random sequences sufficiently fast and strong to render the laser cavity modeless, in the sense that heterodyning of the laser output did not show any spectral lines corresponding to a mode spectrum. No significant change in measured pulse characteristics was observed, compared to conventional mode-locking in the unmodulated cavity. The insensitivity to the random phase modulation is expected, given the lack of phase-sensitive elements in the cavity
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
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