597 research outputs found
Repetitive current control of two-level and interleaved three-phase PWM utility connected converters
No full textThis thesis is mainly concerned with investigations into digital repetitive current controlof two-level and interleaved utility connected PWM converters. The research ismotivated by the relatively poor performance of classical (PI) controllers when theutility voltage harmonic distortion is high. This is due to the low gain, and poordisturbance rejection of the PI controller at the utility harmonic frequencies. Repetitivefeedback controllers have the ability to track or reject periodic disturbances, such asutility harmonics, as they naturally have high gains at the utility voltage harmonicfrequencies, assuming that these frequencies do not change.Repetitive controllers (RC) are known for being sensitive to variations in systemparameters and disturbance frequency, which in practice renders them either ineffectiveor unstable. Another challenge arises from the memory requirements of RC in case ofthe absence of even harmonics, which can make its practical implementation difficultand expensive. In addition, another problem that has not been investigated extensivelyin the literature is that the effectiveness of RC is severely limited by the limitedbandwidth of the plant (the utility connected converter and its filter). Theoreticalanalysis and simulation results presented in this thesis show that RC could noteffectively reject disturbances at frequencies above the closed loop system bandwidth.The design of the converter's output filter bandwidth and the values of its componentsneed to be selected carefully, to enable RC to be used effectively.The research in this thesis focuses on investigating the practical implementation andperformance limits of two types of repetitive controllers (conventional and oddharmonics),used for current control of two-level utility connected converter with LCLoutput filter. The odd-harmonic repetitive controller halves the memory requirementand offers higher gains only at odd harmonic frequencies of interest. The overall controlscheme consists of the traditional classical tracking controller with a dual loop feedbacksystem and RC. The results indicate that the repetitive controller improves the steadystate error and the total harmonic distortion of the output current, provided that theplant's bandwidth is sufficiently large.Finally, a repetitive controller for an interleaved utility connected converter has beendesigned and investigated in this study. The interleaved converter system has higherbandwidth than the two-level converter, which improves the effectiveness of RC. Itprovides good disturbance rejection compared to classical controllers which results inlow output current THD. The RC was demonstrated to be robust despite uncertainty inutility impedance, while achieving a fast almost zero error convergence. The proposedRC has been experimentally implemented using a DSP and the results indicate that thequality of output current complies with international standards on harmonic limits andmatches simulation results obtained from the Matlab/Simulink model of the system
Dr. Jamil Jalibi: The Fragrence of Personal Relation and Research
No full textDr Jamil Jalibi (1929-2019) is a well-known writer, literary historian and critic. There are over thirty books on these genres, to his credit. He wrote a matchless History of Urdu Literature and edited a legendary literary magazine, Naya Daur, for many years. In this article, the author has remembered him, through his personal reflections. Unpublished letters of Dr Jamil Jalibi, addressed to the author, have also been produced here. These letters not only express his sentiments towards his addressee but also reflect his own personality through the words of affection and literature. Questions raised by the author are also answered by the literary genius. Issues requiring explanations have been expounded on, in the endnotes
Dr. Jamil Jalibi: The Fragrence of Personal Relation and Research
No full textDr Jamil Jalibi (1929-2019) is a well-known writer, literary historian and critic. There are over thirty books on these genres, to his credit. He wrote a matchless History of Urdu Literature and edited a legendary literary magazine, Naya Daur, for many years. In this article, the author has remembered him, through his personal reflections. Unpublished letters of Dr Jamil Jalibi, addressed to the author, have also been produced here. These letters not only express his sentiments towards his addressee but also reflect his own personality through the words of affection and literature. Questions raised by the author are also answered by the literary genius. Issues requiring explanations have been expounded on, in the endnotes
Dr. Jamil Jalibi: The Fragrence of Personal Relation and Research
No full textDr Jamil Jalibi (1929-2019) is a well-known writer, literary historian and critic. There are over thirty books on these genres, to his credit. He wrote a matchless History of Urdu Literature and edited a legendary literary magazine, Naya Daur, for many years. In this article, the author has remembered him, through his personal reflections. Unpublished letters of Dr Jamil Jalibi, addressed to the author, have also been produced here. These letters not only express his sentiments towards his addressee but also reflect his own personality through the words of affection and literature. Questions raised by the author are also answered by the literary genius. Issues requiring explanations have been expounded on, in the endnotes
Corrigendum
No full textBoyer TD, Medicis JJ, Pappas SC, Potenziano J, Jamil K. A randomized, placebo-controlled, double-blind study to confirm the reversal of hepatorenal syndrome type 1 with terlipressin: the REVERSE trial design. Open Access Journal of Clinical Trials. 2012;4:39–49.Dr Jamil’s first name was incorrectly spelt as Khuramm Jamil in the author list. The correct spelling is Khurram Jamil.Read the original articl
ڈاکٹرجمیل جالبی کا حاسئہ تحقیق : میرا جی، راشد اور میرکے خصوصی حوالےسے: SENSATION OF RESEARCH OF DR JAMIL JALBI:WITH SPECIAL REFERENCE TO MIRA.G, RASHID & MEER
No full textDr. Jamil Jalbi being an authentic reference of Urdu literature, Research and criticism has no alternative in Reseach specially. He has reviewed critically work of many literary personalites. Critical analysis of Mira.G, Rashid and Meer by Dr Jamil Jalbi are significantly known in Urdu literature. The purpose of this article is to explore Reseach expertise of Dr. Jamil Jalbi regarding Kulyat-e-Meera G, Noon-Meem Rashid-Aik Mutalia, Muhammad Taqi Meer. Author has concluded that criterion and standards of Research established by Dr. Jamil Jalbi are road map for new scholars and Researchers
Sparkle Through Speech 3.0. Digital dialogue: mastering communication skills / Nur Afiqah Ab Latif , Marni Jamil and Noraziah Mohd Amin
Full text linkThe Sparkle Through Speech (STS) programme is a specialised initiative designed for school students to enhance their language skills, specifically communicating in English, with confidence. It is organised by the Academy of Language Studies (APB), Universiti Teknologi MARA, Pulau Pinang Branch (UiTMCPP). The STS programme has progressed through three iterations as university social responsibility (USR) initiatives, namely STS 1.0, STS 2.0, and STS 3.0, beginning with the initial STS 1.0 launched on 28 August 2023, with a focus on enhancing public speaking skills in English. Building on its success, STS 2.0, then held on 27 December 2023, at the Tun Abdul Razak Library (PTAR), UiTMCPP, introduced additional activities such as learning German and French, attracting 35 participants aged 6 to 12. STS 3.0, the latest iteration, offered meticulously designed modules that integrate digital technology to effectively communicate ideas, aligning with the latest communication needs. The objectives of the STS 3.0 programme include enhancing participants' communication confidence, fostering creative thinking in technology use for learning, exposing participants to positive aspects of podcasting, and cultivating leadership, teamwork, and problem-solving skills. The organising committee, led by Miss Marni Jamil as the Programme Director, 7 APB lecturers (Nur Afiqah Ab. Latif, Noraziah Mohd Amin, Anwar Farhan Mohd Marzaini, Nur Fatin Shahmina Mohd Fauzey, Muhamad Usamah Mohd Ridzuan, Raja Rosila Raja Berahim and Wan Noorli Razali) as the committee members and facilitators, 7 UiTMCPP students and 1 teacher from MRSM Transkrian as the facilitators, aims to achieve these objectives with the support of the UiTMCPP Administration Division. The programme, themed "Digital Dialogue: Mastering Communication Skills," was organised by the Academy of Language Studies (APB), UiTMCPP and took place on 14 and 15 February 2024, at the Tun Abdul Razak Library, (PTAR) UiTMCPP. 45 participants aged 8 to 12 registered to join the programme
ترجمےکافن اور ڈاکٹر جمیل جالبی کی ترجمہ نگاری: THE ART OF TRANSLATION AND THE RENDERINGS OF DR. JAMIL JALBI (WITH SPECIAL REFERENCE OF JANWARASTAN)
No full textTranslation and discourse analysis are the best sources of uniformity and conformity among societies and civilizations regarding meanings, ideologies, concepts and beliefs. Dr. Jamil Jalbi transforms from English language to Urdu aphoristically with same sense of meaning and context. The Researcher has critically evaluated translation of George Orwell’s novel “Animal Farm” in Urdu Language entitled “Janwarstan” by Dr. Jamil Jalbi where idioms, phrases, phrasal verbs and slangs have been transformed as Lingua Franca. The reader feels originality that is real sense of Dr. Jamil Jalbi. A sociological system allegorically has been revealed by the author and conveyed the 2nd language with contextual aspect of civilization. Political differences how run among societies are real theme and how the misuse of power handles the situations
Adaptasi sistem Kaizen dalam konsep pengurusan kendiri: satu kajian kes di jabatan Pengajian Asia Timur, Universiti Malaya
No full textCabaran globalisasi masa kini menuntut generasi mudauntuk memiliki daya saing dan ketahanan dalam pelbagai aspek seperti kekuatan mentaliti, perancangan dan tindakan.Generasi muda merupakan aset penting dan pelapis generasi masa hadapan.Kekuatan konsep pengurusan kendiri adalah ditagih demi kelangsungan kecemerlangan negara dalam pelbagai bidang seperti ekonomi, politik dan sosial.Konsep pengurusan kendiri boleh didefinisikan sebagai satu bentuk latihan kawalan kehendak atau keperluan diri kepada sesuatu perkara dan bagaimana setiap individu itu menilai diri dari sudut positif mahupun negatif. Kajian ini akan melihat dari aspek kesesuaian sistem Kaizen itu sendiri dalam mencorak pengurusan kendiri yang merupakan formula kejayaan generasi masa depan. Huraian kajian ini juga akan membincangkan mengenai cabaran dan implikasi yang dihadapi oleh pelajar Pengajian Jepun di Jabatan Pengajian Asia Timur sebagai sampel kajian.Pemahaman dan pendekatan yang digunakan pelajar untuk mengadaptasikan sistem Kaizendalam pengurusan kendiri menjadi agenda penting untuk memenuhi permintaan sumber pengurusan manusia yang berkualiti, berwawasan dan mempunyai integriti yang tinggi
MCL-1 localizes to sites of DNA damage and regulates DNA damage response
No full textMCL-1, a pro-survival member of the BCL-2 family, was previously shown to have functions in ATR-dependent Chk1 phosphorylation following DNA damage. To further delineate these functions, we explored possible differences in DNA damage response caused by lack of MCL-1 in mouse embryo fibroblasts (MEFs). As expected, Mcl-1(-/-) MEFs had delayed Chk1 phosphorylation following etoposide treatment, compared to wild type MEFs. However, their response to hydroxyurea, which causes a G(1)/S checkpoint response, was not significantly different. In addition, appearance of gamma-H2AX was delayed in the Mcl-1(-/-) MEFs treated with etoposide. We next investigated whether MCL-1 is present, together with other DNA damage response proteins, at the sites of DNA damage. Immunoprecipitation of etoposide-treated extracts with anti-MCL-1 antibody showed association of MCL-1 with gamma-H2AX as well as NBS1. Immunofluorescent staining for MCL-1 further showed increased co-staining of MCL-1 and NBS1 following DNA damage. By using a system that creates DNA double strand breaks at specific sites in the genome, we demonstrated that MCL-1 is recruited directly adjacent to the sites of damage. Finally, in a direct demonstration of the importance of MCL-1 in allowing proper repair of DNA damage, we found that treatment for two brief exposures to etoposide , followed by periods of recovery, which mimics the clinical situation of etoposide use, resulted in greater accumulation of chromosomal abnormalities in the MEFs that lacked MCL-1. Together, these data indicate an important role for MCL-1 in coordinating DNA damage mediated checkpoint response, and have broad implications for the importance of MCL-1 in maintenance of genome integrity.Peer reviewedfinal article publishedprotein complexchromosomesG2/McheckpointDNA repai
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