1,721,995 research outputs found
Dr. Usman Ali Khan
No full textDr. Usman Ali Khan is Ph.D. in Information Technology and in the field of IT education since last thirteen years. He is now working as Associate Professor in King Abdul Aziz University since September, 2010. He has served as Assistant Professor in Garyounis University, Benghazi-Libya from October 2007 to July, 2010 and also served Senior Instructor in Integral University, Lucknow – India from October, 1999 to September, 2007. He has guided four Ph.D. scholars and three students for Masters. His research interests includes Reuse and Component based development, Human Computer Interaction, Software Engineering and Object Oriented Software Design (OOSD). Has has served in various capacities in IEEE Officer “Professional Activities” at KAU, International Arab Conference (ACIT), Arab Support Centre for Free and Open Source Software, Journal of Science and its Applications, Garyounis University, Libya and International Association for Computer Scientists and Engineers (IACSE) Journal. He has published more than 20 papers in international journals and conference proceedings.https://www.interscience.in/mentors/1026/thumbnail.jp
Investigating the Granulometric Distribution of Fluvial Sediments through the Hybrid Technique: Case Study of the Baganza River (Italy)
Full text linkSediment characterization is a key parameter to understand the geomorphological attributes of a catchment (i.e., assessing the variability of the sediment transport capacity and surface roughness of a hydraulic channel). This assessment can be performed in several ways, for instance, through numerous sampling techniques (i.e., pebble count and zig-zag methods). Sediment sampling using manual sieving inside a laboratory is a hectic process as it requires ample time and physical effort, particularly when the scale of interest is at the catchment level. In order to find the granulometric distribution of some sections of the Baganza streambed (northern Italy), in order to carry out analysis at the catchment scale, a hybrid technique (a combination of the conventional and photogrammetric method) is introduced. Different grain size distribution curves (GSDs) obtained from the image processing technique using Digital Gravelometer software and traditional sediment sieve analysis (sieve-by-weight method) were compared. Sediment sampling was limited to sections of the streambed that were visible during lower flows in the dry summer season. Sediment samples including fine soil fraction, were collected up to a depth of 30 cm, although the exposed areas behaved as gravels and cobble bars. The adopted hybrid technique approach for the characterization of fluvial sediments is desirable in order to accommodate the full range of particle sizes inside the riverbed. Digital photography was performed at ten different cross sections, along the longitudinal profile of the 30 km long reach of the Baganza River, to examine the sediment distribution, grading, and representative particle sizes (D10, D50, D90) at each of the respective cross sections. A comparison of the photogrammetric method and traditional sieve analysis revealed strong agreement in coarser segments of the grain size distributions, but it was deficient in the finer part (<2 mm) due to the shielding effect produced by bigger particles. However, the adopted hybrid technique appears to be quite efficient and promising in determining the GSD by reducing the costs and the sediment sample collection time in the field
Lightweight security schemes for internet of things resource-constrained devices / Usman Ali
No full textThe implementation of efficient security mechanisms for Internet of Things (IoT) environments based on Radio Frequency Identification (RFID) and Wireless Sensor Networks (WSN) has always been a constant challenge due to limited computing resources and communication over insecure wireless channels. Several authentication schemes have been proposed in recent years. However, some schemes are more focused on lightweight performance features using cryptographic operations with the lowest computational cost. The use of this operation affects important security requirements. Other authentication schemes that meet security requirements have unsatisfactory lightweight characteristics. To address these issues, three different authentication schemes are proposed, namely: Signcription-based Authentication Scheme for RFID termed SAS-RFID, Signcription-based Certificateless Authentication Scheme for WSN termed SCAS-WSN, and Enhanced Lightweight and Secure Certificateless Authentication for WSNs termed ELWSCAS-WSN. ELWSCAS-WSN is based on the concept of Authenticated Encryption with Associated Data (AEAD). The proposed solutions namely SAS-RFID, SCAS-WSN and ELWSCAS-WSN are based on elliptic curve cryptography (ECC) with Curve25519. The key exchange (KE) protocol X25519 is also used in the proposed solution to create a secure session key (SK) with reduced computational cost. The security of the proposed solution is evaluated using two different methods: formal analysis and informal analysis. Formal security analysis is conducted using the Real or Random (RoR) model and the Automated Validation of Internet Security Protocols and Applications (AVISPA) toolkit. The efficiency of the proposed solution is evaluated and compared with existing related schemes. The results obtained show that the proposed solution is generally more efficient and resistant to known attacks. Further, the proposed solution fulfills all the required security features and is faster compared to the related existing authentication schemes
"Music as an Interfaith Tool: The Meeting of Nusrat Fateh Ali Khan with the Novum Gaudium Gregorian Chant Choir"
No full textThe world of qawwālī is marked by the dazzling passage of Nusrat Fateh Ali Khan (1948-1997), to the extent that one could say that there is a ‘before’ and an ‘after’ Nusrat: before him, no qawwāl had ever released so many recordings or been so successful. The great majority of the Westerners surely listened for the first time to qawwālī thanks to Nusrat’s intense voice. His meetings with musicians from different backgrounds took him to the most diverse audiences, as did his appearances in various film scores.
In this article I take into exam the reception of the qawwālī as a musical genre in itself in the West: even if the listeners could not understand its poetical mystical texts in Urdu, Hindi and Farsi, the genre was clearly perceived as ‘devotional’ and ‘spiritual’ mainly thanks to the intense climate typical of the musical genre itself and thanks to Nusrat peculiar voice that entered different spiritual Western circles. From this contextualisation, I focused on a case study, a particular interfaith musical meeting that took place in 1994 at the ‘Time Zones’ Festival in Bari, Italy, at the San Sabino Cathedral, between the Nusrat Fateh Ali Khan Party and the Gregorian Chant Choir Novum Gaudium directed by Benedictine father Anselmo Susca (1929-2012). After this meeting, in 1997, a CD entitled Oriente / Occidente was released for the label Materiali Sonori. The concert and its CD can be considered as an example of a true interest in interfaith spirituality that was typical of the epoch and that somehow vanished after September 11th 2001
sj-docx-1-cre-10.1177_02692155231225662 - Supplemental material for Clinical tools for evaluating the severity of overactive bladder: A systematic review of psychometric properties
No full textSupplemental material, sj-docx-1-cre-10.1177_02692155231225662 for Clinical tools for evaluating the severity of overactive bladder: A systematic review of psychometric properties by Mohammed Usman Ali, Stanley John Winser, Priya Kannan, Georg S Kranz and Kenneth Nai-Kuen Fong in Clinical Rehabilitation</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
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
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