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مولانا محمد زکریا سہارنپوری

مولانا محمد زکریا محدث سہارنپوری
یکم شعبان ۱۴۰۲؁ھ کو حضرت مولانا محمد زکریا محدث سہارنپوری کا وصال ستاسی سال کی عمر میں مدینہ منورہ میں ہوگیا، جہاں شیدائیوں اور فدائیوں کے بے پناہ ہجوم نے ان کے جنازہ کی نماز پڑھی اور اسی مقدس سرزمین میں سپردخاک کئے گئے، جس کی آرزو زندگی بھر فرماتے رہے۔
وہ چودہویں صدی ہجری میں علمائے سلف کی ایک بے مثال یادگار تھے، ان کی تدفین کے ساتھ اسلام کے اس دور کی ایک بے قرار عبقریت کی نظر حکیمانہ، اسرار محرمانہ، جذب عارفانہ اور پھر دینی علوم کی پشتینبانی، عالی استعداد کی جلوہ سامانی، تحریر کی صاعقہ پاشی اور قلم کی برق دستی بھی تہ خاک ہوگئی، اب جب وہ آغوش رحمت الٰہی میں ہیں، ان کو ان کے معتقدین، ملک العلماء، سلطان الفضلاء، منہاج المتقین، مہبط الانوار اور شمس الفقراء کی حیثیت سے یاد کرکے ان کی دائمی جدائی پر آنسو بہائیں گے، ان کے جلوہ صدرنگ پر آئندہ بہت کچھ لکھا جائے گا، وہ دینی اور روحانی علوم کے دریا میں کبھی مثل موج ابھر کر کبھی اس کے ساحل سے گزر کر کبھی اس کے سینے میں اتر کر ان کے رازکو جس طرح فاش تر کرتے رہے، اس پر معلوم نہیں کیا کچھ قلم بند ہوتا رہے گا، انھوں نے خدا جانے کتنے اوراق پر اسرار الٰہی کے حقائق اور انوار الٰہی کے دقائق کو آشکار کیا، ان کی ان گنت تصانیف کی روحانی، مذہبی، نظری، فکری، اخلاقی اور دعوتی تعلیمات سے برابر عبرت و بصیرت کے درس حاصل ہوتے رہیں گے۔
تعلیم مظاہر العلوم سہارنپور میں پائی اور وہیں ایک عرصہ تک درس و تدریس کا سلسلہ جاری رکھا، اپنے والد بزرگوار سے مجتہدانہ دماغ پایا تھا، اسی لئے طالب علمی ہی کے زمانے سے قرآن مجید حدیث مقدس اور فقہ کا مجتہدانہ مطالعہ...

رویہ صارف (Consumer Behavior) اور اسلامی اخلاقیات

Consumer Behavior means behavior of consumers about buying goods and services in the market. Consumer behavior entails all activities associated with the purchase, use and disposal of goods and services, including the consumer emotional, mental and behavioral responses that precede or follow these activities. The following article discusses consumer behavior in the light of Islamic ethics, and explains different aspects of consumer behavior according to Islamic moral values and also given suggestions to consumers and marketers to adopt Islamic buying and selling behavior, which is beneficial not only for individual but also to human as a whole. The consumer behavior in the modern capitalist economy plays very important role, not only in consumption but also in the production and services.

Sensor Array Assisted Spectrum Sensing and Performance Optimization in Cognitive Radio Networks

Cognitive Radio has gained worldwide attention from research communities and is expected to be a revolutionary technology for the next generation (4G) wireless systems. In this dissertation, Amplify-and-Forward (AF) based relay-assisted cognitive radio networks (RCRNs) are studied in an underlay spectrum sharing environment. The primary issue faced by underlay networks is the limited transmit power ability of the secondary users (SUs) due to the interference constraints towards the primary users (PUs), which reduces secondary throughput and allows only short- range communication. Thus, performance enhancement of secondary communication in the frequency bands allocated to the PUs is a major design challenge faced by the underlay RCRNs. It requires relay selection along with the fine tuning and adjustment of the transmit power of the secondary relays. In this thesis, we proposed advanced multiple relay selection schemes for secondary network in the Rayleigh flat-fading scenario considering the availability of perfect instantaneous channel state information (CSI). The effects of variations in the instantaneous CSI, transmit power of source and relays, interference threshold of the primary network, signal-to-noise ratio (SNR) threshold of the secondary network and size of potential relay network on multiple relay selection in underlay RCRNs are the main issues that are analyzed in depth in this research. Furthermore, the performance analysis of multiple relay selection has been carried out and closed form expressions for the outage probability and average probability of error have been derived through the cumulative distributive function (CDF) of the received SNR at secondary destination, which is a new contribution to the AF-based underlay RCRNs. The optimization tool used in this study is Artificial Bee Colony (ABC) global optimizer. Another novel idea proposed in this dissertation is Fuzzy Rule Based System (FRBS) for multiple relay selection and transmit power allocation (RSTPA), which is a new contribution to the underlay RCRNs. The proposed FRBS assisted RSTPA schemes aim to perform intelligent multiple relay selection for performance enhancement of secondary communication in power constrained RCRNs. It is proved through simulations that FRBS is an optimal choice to solve the non-linear optimization problems of SNR maximization and transmit power minimization. Another contribution of this research is in the field of spectrum sensing in CRNs. Spectrum sensing faces a lot of challenges in terms of reliability and accuracy of information for detection and estimation of primary transmissions in CRNs. The advantages and limitations of different cooperative and non-cooperative spectrum sensing schemes have been studied in detail, and a novel spectrum sensing scheme based on uniform linear array (ULA) of sensors is proposed, which not only detects the number of sources, but also estimates their parameters such as frequency, Direction-of-Arrival (DOA) and power strength. The effectiveness and reliability of the proposed scheme is proved under low SNR conditions. Genetic Algorithm (GA) hybridized with Pattern Search (PS) is used to optimize the results. All the proposed algorithms have been investigated through simulations under different design requirements, constraints and a well-defined range of different parameters to validate their significance and effectiveness.
Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

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