1,721,621 research outputs found
Climate policy uncertainty and world renewable energy index volatility forecasting
No full textSince the signing of the Paris Agreement in 2015, the global energy structure has undergone unprecedented adjustment, and renewable energy has ushered in a new period of development opportunities. From the perspective of energy stability and sustainable development, this paper uses the generalized autoregression-conditional heteroscedasticity mixed data sampling model (GARCH-MIDAS) to explore the predictive power of climate policy uncertainty (CPU) on the index volatility of renewable energy. At the same time, eight uncertainty indices, including the economic policy uncertainty index and geopolitical risk index variable, are introduced to discuss the impact on the volatility of renewable energy. Furthermore, the out-of-sample prediction accuracy of each model is tested by the out-of-sample R
OS
2, Model Confidence Set (MCS), direction-of-change (DoC) and other evaluation methods. Climate policy exhibits a superior ability to predict renewable energy volatility, offers a new perspective for the accurate prediction of renewable energy volatility, and provides a reliable guarantee for the sustainable development of the energy market and financial market.
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sj-docx-1-taj-10.1177_20406223221078672 – Supplemental material for Physiotherapy interventions may relieve pain in individuals with central neuropathic pain: a systematic review and meta-analysis of randomised controlled trials
No full textSupplemental material, sj-docx-1-taj-10.1177_20406223221078672 for Physiotherapy interventions may relieve pain in individuals with central neuropathic pain: a systematic review and meta-analysis of randomised controlled trials by Priya Kannan, Umar Muhammad Bello and Stanley John Winser in Therapeutic Advances in Chronic Disease</p
sj-docx-1-taj-10.1177_20406223211063059 – Supplemental material for Effects of nonsurgical, minimally or noninvasive therapies for urinary incontinence due to neurogenic bladder: a systematic review and meta-analysis
No full textSupplemental material, sj-docx-1-taj-10.1177_20406223211063059 for Effects of nonsurgical, minimally or noninvasive therapies for urinary incontinence due to neurogenic bladder: a systematic review and meta-analysis by Mohammed Usman Ali, Kenneth Nai-Kuen Fong, Priya Kannan, Umar Muhammad Bello and Georg Kranz in Therapeutic Advances in Chronic Disease</p
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
Aliran kritik hadith semasa: Analisis metode kritik Abu Ishaq al-Huwayni, Mahmud Sa‘Id Mamduh dan Hamzah al Malyabari / Umar Muhammad Noor
Full text linkKalangan Ahli Sunnah pada hari ini telah berpecah menjadi beberapa aliran. Tiga daripadanya selalu muncul dalam perdebatan tentang status kesahihan hadith iaitu aliran Sufi, Salafi dan Iḥyā’ Manhaj al-Mutaqaddimīn. Sebuah hadith yang dinilai sahih oleh salah satu aliran seringkali dinilai lemah oleh aliran yang lain, ataupun sebaliknya. Sebagai satu langkah untuk merapatkan barisan, penyelidikan ini bertujuan untuk mengkaji sebab-sebab perselisihan dalam kritik hadith tersebut dengan memfokuskan pengamatan kepada metode kritik Maḥmūd Sa‘īd Mamdūḥ daripada aliran Sufi, Abū Isḥāq al-Ḥuwaynī daripada aliran Salafi dan Ḥamzah al-Malyabārī daripada aliran Iḥyā’ Manhaj al-Mutaqaddimīn. Metodologi ketiga-tiga tokoh dirumuskan menerusi analisis induktif yang diaplikasi terhadap pelbagai ucapan dan praktik mereka dalam menetapkan status perawi, kesambungan sanad, analisis ‘illah dan naiktaraf hadith lemah. Kajian kualitatif dalam penyelidikan ini turut mengaplikasi metode analisis sejarah, analisis teks dan analisis perbandingan. Data primer dan sekunder diperolehi menerusi metode dokumentasi. Hasil kajian mendapati bahawa ketiga-tiga tokoh bersepakat dalam kebanyakan prinsip dan kaedah utama dalam ilmu kritik hadith. Perbezaan metodologi di antara ketiga-tiga tokoh berpunca daripada perbezaan dalam merujuk sumber, perbezaan dalam penetapan kaedah dan perbezaan dalam menentukan sempadan ijtihad. Kajian turut mendapati bahawa metode kritik yang diamalkan oleh ketiga-tiga tokoh secara umumnya mewakili tiap-tiap aliran. Daripada aspek kekuatan, metode kritik hadith yang diaplikasi oleh tokoh aliran Sufi membuka peluang yang lebih besar dalam mensahihkan dan menghasankan hadith. Metode ini adalah kelanjutan daripada penerimaan metode fuqahā’ dalam kritik hadith dan sikap aliran Sufi yang selalu berusaha mempertahankan tradisi daripada kritikan. Metode kritik hadith tokoh Salafi lebih bersederhana (mu‘tadil) walaupun masih bercampur dengan metode kritik ahli fiqh (fuqahā’) yang tidak selari dengan konsep dan praktik ahli hadith. Metode kritik tokoh aliran Iḥyā’ Manhaj al-Mutaqaddimīn lebih menepati metode kritik ahli hadith kerana teliti membezakan antara metode ahli hadith daripada metode fuqahā’ serta selalu tunduk kepada ketetapan ahli hadith terdahulu. Selain menyediakan kajian analisis, penyelidikan ini turut menghasilkan tujuh kaedah berinteraksi dengan khilaf kritik hadith semasa untuk panduan penyelidik dan masyarakat awam. Dapatan ini diharapkan dapat menjelaskan salah satu akar perselisihan pendapat di antara aliran-aliran Sunni Semasa, sekaligus memartabatkan ilmu kritik hadith dalam konteks moden
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
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