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Λ 1 / H 2 / H ∞ / Tdc Multiobjective Optimization Control Synthesis for Mimo Systems

Thesis Info

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External Link

Author

Bhutto, Jawed Akhtar

Program

PhD

Institute

National University of Modern Languages

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2009

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/285

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727681392

Similar


This dissertation presents a methodology to address the problem of composite measure for multiobjective optimal performance of multi-input multi-output (MIMO) systems. This technique solves the l 1 norm, H 2 norm, H ∞ norm and time domain characteristic constraints problems of MIMO systems simultaneously. We will show here that resulted problem always admits an optimal solution or a suboptimal solution with performance arbitrarily close to the optimal cost. This can be obtained by constructing two sequences of finite dimensional semidefinite problems (SDP), whose objective values converge to the optimum from below and above. On the application of this synthesis technique, different types of multiple-input and multiple-output problems can be solved and we can get desired optimal multiobjective performance of conflicting nature. Numerical examples are presented to illustrate the effectiveness of proposed methodology.
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مناظر احسن گیلانی

مولانا مناظر احسن گیلانی
حضرت الاستاذ رحمۃ اﷲ علیہ کا حادثہ وفات ابھی فراموش نہ ہوا تھا کہ آسمان علم و ادب کا ایک اور آفتاب غروب ہوگیا اور مولانا مناظر احسن گیلانی نے ۵؍ جون ۱۹۵۶؁ء کو انتقال کیا، وہ اپنے اوصاف و کمالات میں علمائے سلف کی یادگار اور علوم کی جامعیت، ذہانت و ذکاوت، دین و تقویٰ اور اخلاق و سیرت میں اس دور میں یگانہ تھے، جو اسلامی علوم میں ان کی نگاہ نہایت وسیع اور اس کی ہر شاخ میں ان کے قلم و زبان کی روانی یکساں تھی، اپنی ذہانت و اطباعی سے ایسے ایسے گوشوں سے معلومات و مسائل کا استنباط اور معمولی معمولی باتوں میں ایسے ایسے لطائف و نکات پیدا کرتے تھے کہ حیرت ہوتی تھی، علم ان کے تابع تھا وہ علم کے تابع نہ تھے ان کی ذہانت کتابوں کے انبار سے بے نیاز تھی، وہ تھوڑے معلومات سے ایسے مطول مضامین اور ضخیم کتابیں لکھ دیتے تھے جس کے لیے دوسرے مصنفین کو بڑے بڑے کتب خانوں کی ضرورت ہوتی ہے، ان کا نکتہ آفریں دماغ اور موّاج قلم جدھر رخ کردیتاتھا، تحریر کا دریا بہادیتا تھا، اور اپنے زور میں لعل و جواہر اور خس و خاشاک سب کو بہالے جاتا تھا۔
وہ ایک عرصہ تک جامعہ عثمانیہ کے شعبۂ دینیات کے صدر رہے، اور چوتھائی صدی سے زیادہ، ان کا علمی و تعلیمی فیض جاری رہا، اس زمانہ میں انھوں نے اپنے تلامذہ سے جو علمی و تحقیقی مقالات لکھوائے وہ اسلامی علوم کو جدید رنگ میں پیش کرنے کا ایک نمونہ ہیں، اس کے ذریعہ انھوں نے اس موضوع پر کام کرنے والوں کے لئے ایک شاہراہ قائم کردی۔
جامعہ عثمانیہ کے طلبہ میں اسلامی علوم پر تحقیقات اور جدید علوم سے ان کے موازنہ کا جو ذوق پیدا ہوا، اس...

Interfaith Marriages in Islam: A Case Study of Christian Wives of Muslim Rulers

Force Conversion is adaptation of a different religion or irreligion under duress. Some who have been forced to convert may continue, covertly with the beliefs and practices originally held, while outwardly behaving as converts. At many places the Orientalists put the statement that Islam basic purpose is to establish sovereignty throughout the globe and its primary purport deals with ‘authority’, ‘political’ and ‘economic’ matters for which it also used force for the implementation. Although it is an erroneous statement as Islam’s basic purport is religious, pure and simple; it deals with other social issues. While Islam stressed upon free will and there is no restriction in accepting other religions. As other religions are not in pure form now and Islam is being preserved by Allāh, so it teaches to submit oneself to the Will of Allāh. The early converts to Islam were the Prophet (peace be upon him) close friends Abu Bakr (may Allāh be pleased with her) and his family members in which his faithful wife Khadija (may Allāh be pleased with her), his cousin Ali were on the top, sand his slave Zayed. None of them argued and accepted Islam immediately. Among them Abu Bakr (peace be upon him) enjoyed prominent place among Arabs and with his influence five people accept Islam in which Sa’ad, Zobeir, Talha, Othman and Abd-al-Rahman who were member of prominent families. Abdul Rahman converted four people of his family. Likewise Bilal (may Allāh be pleased with her) was the first slave, ransomed by Abu Bakr (may Allāh be pleased with her). These early converts of Islam were men of piety and dignity.1

Molecular Epidemiology of Dengue Virua Infectionand Full Length Characterization of Prevalent Genotypes in Pakistan

Dengue fever is one of the important and most common mosquitoe borne diseases in the tropical and subtropical areas of the world. Since 1994, the dengue fever is appearing as a fatal health hazard in Pakistan. Two severe outbreaks of dengue were recorded during the years-2011 in Punjab Province and 2013 in Swat District, wherein hundreds of people died and 1000s more remained with the potential risk of the fetal fever. This thesis encompasses molecular biology of the major dengue outbreaks of Pakistan in general and the first hand information on the dengue outbreak of the year 2013 in District Swat. In order to characterize the dengue virus (DENV), blood samples from 1795 dengue patients were obtained and analyzed through RT-PCR, for its epidemiology, evolutionary history and prevalent genotypes/serotypes of the outbreaks. Phylogenetic analyses were carried out through MEGA, PhyML software and selection pressure was determined through SLAC, REL and FEL methods implemented in Datamonkey software. Whereas Recombination Event Detection was analysed through GARD method and nucleotide and amino acid identities were determined throgu Clustal Omega. Results of the study were based upon the characterization of 4 complete sequences of DENV-2, 7 NS3 genome sequences of DENV-2 and 10 each of the C, E and NS3 gene sequences, of DENV-3. The results revealed that the active dengue infection in Swat District was 30.5% with the prevalence of DENV-2 and DENV-3 as 36.6 and 62.8 percent, respectively which shows that the major serotypes circulating in Swat were DENV-2 and DENV-3. Furthermore xii DENV-1 and DENV-4 were not detected in any of the sample collected from Swat. In Punjab Province during the 2011 outbreak the active infection was 58.5%, of which the prevalence of DENV-2 and DENV-3 was 41.8 and 38.0 percent, respectively, which figured-out that these two serotypes were mainly involved in the dengue outbreak of the year-2011. A limited incidence of DENV-4 and DENV-1 in 2011 outbreak in Punjab at the rate of 9.5 and 4.5 percent respectively was also recorded. Phylogenetic analysis based on both complete genomes and the NS3 gene sequences of DENV-2 grouped the Pakistani isolates as cosmopolitan genotypes. Wheras no recombination was detected in the entire genome of DENV-2 of Pakistani isolates. The phylogenetic analyses, percent nucleotides and amino acids identities of the complete genomes of DENV-2 indicated that the 2013 dengue outbreak in Swat was a continuation of the 2011 dengue infections in Punjab. Furthermore the Pakistani isolates wre found to be genetically more close to the Indian isolates based upon the nucleotide (97.1%) and amino acid (98.5%) identities. The selection pressure analyses revealed no positively selected sites in any of the genes of the DENV-2 among Pakistani isolates. However codon 65 of C, 155 of PrM, 203 of E and 254 of NS1 genes were under negative selection pressure. The highest substitution rate observed among amino acids residues of the ORF of all DENV-2 Pakistani isolates, was between arginine and lysine residues, followed by valine and isoleucine. Phylogenetic analysis of DENV-3 on the basis of the complete E gene and NS3 gene sequences grouped the Pakistani isolates into the genotype III; recognized that the year’s 2013 xiii outbreak in Swat was the continuation of the previous outbreaks in Pakistan and the Pakistani DENV-3 isolates are more closely related to Indian and Chinese isolates. Analyses of the C gene of DENV-3 of the year-2011 were mostly conserved for lysine, arginine and asparagine. The viruses of the 2013 outbreak of Swat District showed the amino acids change for the nonpolar P (proline) and polar K (lysine) instead of R and N in the C gene. All the viruses isolated from the year-2011 dengue outbreak of Punjab showed a conserved pattern of nucleotides/amino acids as compared to the DENV-3 isolates of the dengue outbreak in Swat. This pattern may be due to one of the reasons that viruses established a severe infection in the relatively colder area of Swat and its adaptation to the new environment. Selection pressure analyses of NS3 genes of DENV-3 revealed no negatively or positively selected sites using all the three analytical tools. However codon 94 and 477 of the E genes turned out to be under negative selection pressure. From the selection pressure analysis it is assumed that the emergence and spread of dengue in Pakistan is more due to permissive ecological conditions than the drastic genetic changes in the viral gemome. Hence it is recommended that concerted efforts in terms of public awareness, vector control and household protection measures against dengue should be adopted to check its spread to other areas of Pakistan.