قدرت اﷲ شہاب
جناب محمد طفیل کی وفات کے کچھ ہی روز بعد جناب قدرت اﷲ شہاب کی رحلت کی خبر ملی، وہ برطانوی حکومت کے زمانہ کے آئی۔سی۔ایس تھے، ۱۹۴۷ء کے بعد پاکستان کے بڑے بڑے عہدوں پر مامور رہے، وہ جب پاکستان کے گورنر جنرل جناب غلام محمد صاحب کے سکریٹری تھے، تو پہلی بار ۱۹۵۵ء میں ان سے دارالمصنفین کے دفتری کام کے سلسلہ میں ملا، ایک روز گورنر جنرل ہاؤس میں دوپہر کا کھانا ہوا تو وہ بھی شریک ہوئے لیکن خاموش بیٹھے رہے، ان سے کھانا شروع کرنے کے لیے کہا گیا تو بولے آج شعبان کی پندرہویں تاریخ ہے، وہ نفل روزے سے ہیں، ان کی اس مذہبیت کا اثر دستر خوان کے تمام شرکاء پر رہا۔
۱۹۵۵ء سے پاکستان کا سفر برابر کرتا رہا، ان سے برابر ملاقاتیں ہوتی رہیں، دارلمصنفین کی مطبوعات کا جب باضابطہ حق طباعت و اشاعت حکومت پاکستان کو دیا جارہا تھا تو انھوں نے اس کی دفتری کاروائی کرنے میں بڑی سہولتیں پہنچائیں جس کے لیے دارلمصنفین ان کا بڑا ممنون ہوا، ان میں سرکاری افسر کی رعونت بالکل نہ تھی، ہر موقع پر بڑے متین، سنجیدہ اور بااخلاق نظر آئے، بولتے بہت کم تھے مگر سنتے سب کی تھے، اور حتیٰ الامکان مدد کیا کرتے تھے، ان کو انگریزی اور اردو لکھنے میں بڑی مہارت تھی، اردو ادب کا بڑا عمدہ مذاق رکھتے تھے لیکن اس کا اظہار اپنی گفتگوؤں میں نہ ہونے دیتے، ادبی حلقوں میں اپنی اردو تحریروں کے لیے مقبول تھے، دعا ہے کہ اﷲ تبارک و تعالیٰ ان کی نیکیوں، لوگوں کے ساتھ کرم گستریوں اور روز مرہ زندگی میں ان کی خوبیوں کی بدولت ان کو اپنی آغوش عفو و کرم میں لے کروہی جگہ عطا فرمائیں جو نیک بندوں کو اس کی بارگاہ میں ملا کرتی ہے، آمین۔...
This study investigates the case of arbitration in the modern states in general and in the Islamic Republic of Pakistan in particular, as a self-binding, amicable mode of Alternative Dispute Resolution (ADR). It starts with arbitration’s meaning, history and evolutional background and discusses them as preliminaries and entrance to the main topic. The study debates Pakistani legislation on the subject, with special focus on the Arbitration Act, 1940. It examines the functioning of arbitration in Pakistani legal system, detects the flaws and areas of improvement therein, and most significantly, suggests proposals for required amendments in the relevant laws. In this connection, the equivocal nature of ADR provisions in some statutes other than Arbitration Act, has been specially highlighted. As per requirement of the Article 2(A) of the Constitution 1973, some inconsistencies of the laws on the subject with Sharī‘ah have also been traced. The issue of qualifications of arbitrators (hakams) has been detected as the main subject of inconsistency between law and Sharī‘ah, resulting in substantial and effective bearings. A similar inconsistency, comparatively with a lesser effect, has been noted in arbitration of family disputes regarding fixation of number of arbitrators and the hail from families of the disputing spouses. While investigating all these issues, an analytical-cum comparative strategy has been followed. The conclusion contains a concise brief on comparison between Sharī‘ah and law on the subject and a package of proposed amendments in the gray areas.
The objective of this dissertation is to investigate and design adaptive beamforming algorithms in order to improve the performance of wireless cellular technology in spatial domain. For this purpose, blind and non-blind beamforming concepts and related algorithms are investigated; Least Mean square (LMS), Constant Modulus Algorithm (CMA) and others. These algorithms suffer from optimization problems like gain enhancement, interference rejection, high power transmission, bit error rate (BER), minimization of mean square error (MSE) and rate of convergence which undermines their performance in the application of smart antenna array system. In view of these deficiencies, non-blind technique using LMS and MUSIC algorithms is evaluated for selection of parameters for further analysis. A new algorithm namely Bessel Least Mean Square (BLMS) is proposed. Its performance is then evaluated and compared with LMS in order to determine its efficiency in terms of array gain, MSE, BER and convergence performance based on the chosen parameters. Performance improvement is achieved by proposed algorithm over the conventional LMS algorithm. The improvement in BLMS is attributed by introducing a non-uniform step size. This non-uniform step size is obtained from the interaction of Bessel and step size functions. The Bessel function of the first kind has inherent monotonically decreasing property which generates coefficients equal to the number of elements that helps the proposed BLMS algorithm in convergence effectively as compared to LMS algorithm that is based on a constant step size. Further, the analysis of blind technique using CMA and MUSIC algorithms has similarly been investigated for the same selected parameters as above. For blind beamforming, novel algorithms named as Kaiser Constant Modulus Algorithm (KCMA) and Hamming CMA (HAMCMA) using window techniques are proposed and implemented. Their performance is then compared with CMA in terms of array gain, MSE and BER. The KCMA has shown improved performance and this improvement in KCMA is justified in terms of facilitating independent control of the main lobe width and ripple ratio. The HAMCMA, based on fixed type window function has shown better xx iv results in terms of array gain and sidelobe level (SLL) but lacks in BER performance as compared to CMA. The reduction in SLL by these blind beamforming algorithms signifies that using the proposed methods the interferences are very low. Finally, BLMS with Automatic Gain Control (AGC) is proposed by making its step size variable which can update itself from signal array vector. The real model of BLMS is developed and tested for its efficiency in terms of signal recovery, directive gain by minimizing MSE using the “wavrecord” function to bring live audio data in WAV format into the MATLAB workspace and compared with real model of LMS in terms of gain and MSE. From the results presented in the thesis, it is concluded that the proposed algorithms lead to improve in the performance as compared to LMS and CMA algorithms and can be utilized efficiently for further enhancement of wireless cellular technology.