478 research outputs found
Seeing with Hassan Sharif
No full textHassan Sharif was a pioneering "moderniser" in the Arabian Gulf region, re-shaping its aesthetic, social and political culture. Schooled in systems art at Central School of Art in England, he went on to pave the way for a generation of artists in the United Arab Emirates. Here, curator, artist, author, and museum director, Dr. Omar Kholeif reflects on the task of conserving the artist's legacy for younger generations, and considers how the artist shifted an ontological view of Dubai, and the world around it
The management of intelligence-assisted finite element analysis technology
No full textArtificial Intelligence (AI) approaches to Finite Element Analysis (FEA), have had tentative degrees of success over the last few years and some authors have argued that effective FEA can help in the manufacture reliability and safety aspects of engineered artefacts. The author of this paper reviews how such AI techniques have been applied and in this light, the author then uses a Fuzzy Cognitive Mapping (FCM), to develop a framework for the management of intelligence-assisted FEA
Examining the Authorship of Nahj al-Balāgha: Between Ali Ibn Abi Talib, al-Sharif al-Radi, and al-Sharif al-Murtad
No full text"نهج البلاغة" كتاب يُنسَب إلى عليّ بن أبي طالب رضي الله عنه يتضمّن عددًا من الخطب والمواعظ والعهود والرّسائل والحِكَم والوصايا والآداب، توزّعت على 238 خطبة، و 79 رسالة و 489 قولا، يرى الشّيعة في "النّهج" أنّه أحد الكتب المهمّة الّتي يجب على الشّيعي قراءتها والأخذ والتعلّم منها، وقد اختلف الدّارسون والنّقّاد القدامى والمعاصرون في مؤلّـِفه، فمنهم مَن اعتبره لعليّ بن أبي طالب ومنهم من اعتبره للشّريف الرَّضيّ، وفريق ثالث جعله للشّريف المرتضى. تتناول هذه الدراسة بالاستقصاء والتحقّق والتحليل نسبة الكتاب إلى صاحبه أو ما يُزيل الإبهام، هل هو عليّ بن أبي طالب؟ أم الشّريف الرَّضيّ؟ أم الشّريف المرتضى؟ ويحاول أن يرجّح لمن يُنسَب كتاب نهج البلاغة، وما مدى مصداقيـّته؟ وما مدى صحّة نسبة كتاب نهج البلاغة لعليّ، وما رأي الدّارسين والعلماء فيه؟ وما هي أهمّ المطاعن الموجّهة إلى نهج البلاغة؟The book Nahj al-Balagha is a collection of sermons, letters, adages, commandments, and etiquettes, divided into 238 sermons, 79 treatises, and 489 sayings. People following the Shiite sect regard it as a crucial text for teaching and learning, and they attribute it to Ali Ibn Abi Talib. Yet, the book’s real author is still disputed among Sharia scholars. While some attribute it to Ali Ibn Abi Talib, others claim that al-Sharif al-Radi is the book’s actual author, whereas another group attribute it to al-Sharif al-Murtada. This study employs a comprehensive approach to investigate and analyze the book’s authorship. It involves a detailed literary and historical analysis, examining primary sources, scholarly works, and critical literature to explore the real author of the text. It compares the content of the book with other authenticated works belonging to the potential authors in order to identify similarities and differences. By evaluating the style, language, and themes of Nahj al-Balagha, as well as reviewing historical documents and manuscripts, the study aims to trace the text’s origins and transmissions. In doing so, it addresses the significant critiques and controversies surrounding the text, enhancing our understanding of its historical and literary significance. The study further contributes to the ongoing discourse on the book’s authorship, providing more clarity on the topic and promoting additional scholarly research
Benchmarking performance management systems
No full textThe Balanced Scorecard and associated performance management approaches, has become a widely practiced and popular management reporting method in recent times. Moreover, enabling technology, which assists in the delivery and personalisation of corporate performance information, is having a deeper and more rapid impact than ever before. This paper presents a brief comparative benchmarking study of leading enterprise performance management systems. Also, the author discusses the merits of bespoke internet technology development and out-of-the-box portal functionalities. An analysis of key business drivers and implementation risks of such approaches is highlighted via a case study example, and concludes the paper
Importance Sampling for a Markov Modulated Queuing Network with Customer Impatience until the End of Service
No full textFor more than two decades, there has been a growing of interest in fast simulation techniques for estimating probabilities of rare events in queuing networks. Importance sampling is a variance reduction method for simulating rare events. The present paper carries out strict deadlines to the paper by Dupuis et al for a two node tandem network with feedback whose arrival and service rates are modulated by an exogenous finite state Markov process. We derive a closed form solution for the probability of missing deadlines. Then we have employed the results to an importance sampling technique to estimate the probability of total population overflow which is a rare event. We have also shown that the probability of this rare event may be affected by various deadline values.Importance Sampling, Queuing Network, Rare Event, Markov Process, Deadline
Knowledge representation within information systems in manufacturing environments
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Representing knowledge as information content alone is insufficient in providing us with an understanding of the world around us. A combination of context as well as reasoning of the information content is fundamental to representing knowledge in an information system. Knowledge Representation is typically concerned with providing structures and theories that are used as a basis for intelligent reasoning. For this research however, the author defines an alternative meaning, which is related to how knowledge is used in a given context. Thus, this dissertation provides a contribution to the field of knowledge within information systems, in terms of the development of a frame-of-reference that will support the reader in navigating through the different forms of explicit and tacit knowledge use within the manufacturing industry. In doing so, the dissertation also presents the generation of a novel classification of three forms of knowledge (Structural, Interpretive and Evaluative forms); the development of a conceptual framework which highlights the drivers for knowledge transformation; and the development of a conceptual model which seeks to envelop both the content as well as the context of knowledge (Semiotic as well as Symbiotic factors). This is established through the use of an Empirical, Quantitative case study approach, that seeks to explore an interpretivist view of knowledge representation within two information systems contexts, within two UK manufacturing organisations. The first case study presents how a-priori knowledge assumptions are used in a computer aided engineering decision-making task within a high technology manufacturing company. The second case study shows how knowledge is used within the IT/IS investment evaluation decision making process, within a manufacturing SME. In doing so, both case studies attempt to elucidate the inherent, underlying relationship between explicit and tacit knowledge, via a frame-of-reference developed by the author which defines key drivers for knowledge transformation
Re-localization of SNARE proteins in mouse sperm prior to the acrosome reaction
No full textThe principal role of SNARE proteins is to arbitrate vesicle fusion to a target membrane. Formation of tripartite SNARE protein complexes between SNARE proteins on opposing membranes is the minimal requirement for membrane fusion. The SNARE protein family is large, consisting of more than 60 members. A member of the SNARE family, syntaxin, is found on the sperm plasma membrane while synaptobrevin, is found on the outer acrosomal membrane. During the sperm acrosome reaction, the outer acrosomal membrane fuses at hundreds of points with the overlying plasma membrane, resulting in release of the acrosomal contents. We hypothesize that syntaxin and synaptobrevin re-localize within the sperm plasma membrane prior to the acrosome reaction to form SNARE complexes and promote membrane fusion at hundreds of specific points. Immunofluorescence was used to localize both syntaxin and synaptobrevin in mouse epididymal sperm before and after capacitation. Sperm were fixed and incubated with antibodies to syntaxin, synaptobrevin and then fluorescent secondary antibodies. Super resolution Structured Illumination Microscopy (SR-SIM) was used to examine samples collected at 0, 10, 30, 60, and 120 min of capacitation time, to obtain 3D images of SNARE localization. Quantification of the images was completed using western blotting and by image analysis, using IMARIS, which interpreted the total syntaxin and synaptobrevin positive volume. Results showed that syntaxin-positive volume and syntaxin content remained the same in capacitated and non-capacitated sperm but the location of syntaxin after capacitation was more restricted to the apical ridge of the plasma membrane overlying the acrosome in more than 90% of the sperm observed. The effect of bicarbonate (HCO3-) and BSA, agents necessary in the medium for capacitation, was also investigated. Bicarbonate (HCO3-), which activates soluble adenylate cyclase, was not necessary for re-localization of syntaxin. On the other hand, BSA, which promotes cholesterol efflux, was required for syntaxin re-localization.
In the case of synaptobrevin, the volume of protein remained the same in both capacitated and non-capacitated sperm. Synaptobrevin was found at the apical ridge of the sperm head prior to and following capacitation in approximately 83% of the sperm observed. Our results demonstrate that, unlike syntaxin, synaptobrevin does not shift during the plasma membrane modifications that occur in sperm during capacitation. Syntaxin and synaptobrevin did not co-localize at any time during capacitating and non-capacitating conditions in sperm. Our results will help in identification of pathways that may regulate SNARE localization and function during capacitation, membrane fusion and the acrosome reaction.
Submission published under a 24 month embargo labeled 'U of I only', the embargo will last until 2017-05-01The student, Momal Sharif, accepted the attached license on 2015-04-24 at 14:33.The student, Momal Sharif, submitted this Thesis for approval on 2015-04-24 at 14:45.This Thesis was approved for publication on 2015-04-28 at 08:25.DSpace SAF Submission Ingestion Package generated from Vireo submission #8095 on 2015-07-22 at 14:18:51Made available in DSpace on 2015-07-22T22:33:54Z (GMT). No. of bitstreams: 2
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Previous issue date: 2015-04-28Embargo set by: Seth Robbins for item 79911
Lift date: 2017-07-22T22:34:16Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 79911 on 2017-07-23T09:15:32Z
An analytic and mathematical synchronization of micropolar nanouid by Caputo-Fabrizio approach
No full textNanouids and the enhancement of heat transfer in real systems have proved to be a widely researched area of nanotechnology; other areas of particular interest to researchers include the improvement of thermal conductivity, thermophoresis phenomenon, dispersion of nanoparticles volume fraction, and few others. Based on the touch of nanotechnology, this study investigates the analytic and mathematical performance of micropolar nanouid in the enhancement of heat transfer. The base uid is taken for the purpose of thermal conductivity subject to two types of nanoparticles: Copper and silver. The mathematical analysis of the micropolar nanouid was carried out by invoking the non-integer order derivative and transform methods. By applying a mathematical tool to the equations of micropolar nanouid, the solutions were explored for temperature, microrotation, and velocity. In order to meet the physical aspects of the problem based on micropolar nanouid, the comparison of velocity field of micropolar nanouid for the suspension of ethylene glycol into silver and that of ethylene glycol into copper is made to enhance the rate of heat transfer. © 2019 Sharif University of Technology. All rights reserved.The author Kashif Ali Abro is highly thankful and grateful to Mehran University of Engineering and Technology, Jamshoro, Pakistan for the generous support and providing facilities for this research work
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