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محمد جمیل پروازؔ

محمد جمیل پروازؔ(۱۹۳۹ء۔۲۰۰۲ء) سیالکوٹ میں پیدا ہوئے ۔لیکن ان کی رہائش تحصیل سمڑیال میں تھی۔ آپ حبیب بینک میں اعلیٰ عہدے پر فائز رہے۔ ۱۹۶۰ء میں انھوں نے شعر و شاعری کا آغاز کیا۔ (۹۵۵)’’ لب اظہار ‘‘جمیل پرواز کا پہلا غزلیہ شعری مجموعہ ہے۔ جو ۱۹۹۷ء میں کاغذی پیرہن لاہور نے شائع کیا۔ دوسرا شعری مجموعہ ۱۹۹۹ء میں ’’پرواز‘‘ بھی کاغذی پیرہن نے شائع کیا۔ جمیل پرواز کا تیسرا شعری مجموعہ’’ کانٹوں کے ساتھ ساتھ‘‘ کاغذی پیرہن لاہور سے اپریل ۲۰۰۰ء میں شائع ہوا۔ آپ کا چوتھا شعری مجموعہ ’’جلتے ہاتھ‘‘ علم و عرفان پبلشرز لاہور نے طبع کیا۔

جمیلؔ پرواز ایک قادر الکلام شاعر ہیں۔ انھوں نے غزل کے ساتھ ساتھ دیگر اصناف سخن میں بھی طبع آزمائی کی ہے۔ پرواز ایک رجائی شاعر ہیں۔ حالات جیسے بھی ہوں ان کے ہاں نا امیدی اور یاسیت نظر نہیں آتی۔ وہ زندگی کے مثبت پہلوؤں کو دیکھنے والے انسان اور شاعر ہیں:

زندگی کا ہر کسی کو حوصلہ دیتا ہوں میں

 

گردشِ دوراں کو یوں اکثر سزا دیتا ہوں میں

 

سوادِ تیرگی میں روشنی تقسیم کرتا ہوں

 

دیارِ بے دلاں میں زندگی تقسیم کرتا ہوں

(۹۵۶)

¿جمیل پروازؔ کی شاعری میں ایسے متعدد اشعار موجود ہیں جن میں آپ نے اپنے اندر کی دنیا کا منظر دکھانے کی کوشش کی ہے ۔وہ بڑے مخلص انسان تھے لیکن زندگی میں انھیں کوئی مخلص انسان نہیں ملا۔ جس کا اظہار ان کی شاعری میں جا بجا ملتا ہے۔ داخلیت ان کی شاعری میں بدرجہ اتم موجود ہے۔ دوستوں کی بے وفائی اور بے مروتی کا اظہار بھی اکثر ان کے اشعار میں دیکھا جا سکتاہے:

ہمارے ساتھ چلے...

قاعدة الأصالة والتبعية وأثرها في المعاملات المالية المعاصرة

The Sharīʻah maxims related to originality and dependency are one of the most important maxims which have a significant role in Islamic law. Therefore, the classical jurists paid adequate attention to these maxims and applied them in various issues and cases of fiqh. This paper seeks to analyze the effect of these maxims in different commercial transactions, namely the shariah stauts about the investment and trade in shares of those companies whose mostly transactions are lawful and a few transations are unlawful, shariah status about sale and purchase of shares that contains liquid and fixed assets. This research also explains different types of contracts combined in a single transaction; discusses the effect (with special reference to facilitations and easiness) of said maxims in contracts combined in a single transaction; analyz all the traditions of prophet (ﷺ) about the combination of contracts. The article is divided into two main sections in the following way: First section contains three main Sharīʻah maxims related to originality and dependency. Second deals with the modern applications of these maxims in commercial transactions. An applied and juristic research approach has been employed for the collection and analysis of data.

Optimal Design of a Coreless Axial Flux Permanent Magnet Synchronous Generator for the Wind Power Generation

Renewable power generation from wind and solar are gaining popularity to overcome energy crisis nowadays. A lot of advancement has been focused on wind power generation instead of fossil fuels that are degrading to the environment since last two decades in order to increase electricity generation, efficiency improvement, reliability and cost reduction. The generator used in windmill can be an induction generator (IG), synchronous generator (SG), doubly fed induction generator (DFIG), radial flux permanent magnet synchronous generator (RFPMSG) and axial flux permanent magnet synchronous generator (AFPMSG). Furthermore, due to the variable speed of wind turbine, a fully rated power converter handles the extracted energy in direct drive systems or a coupled geared system. However, with geared system, the cost of the overall system increased a lot and proved to be rather less reliable. In this regard, AFPMSG are most suitable for the direct drive applications due to its disc shape structure. The design of AFPMSG is derived from the design of RFPMSG. By using the desired value of parameters like power, speed, efficiency, number of phases, frequency, rated voltage and by taking some assumptions, inner and outer diameter of the rotors can be computed using sizing equation. Furthermore, in order to get balance three phase output and suitable winding factor a proper combination of the coils and poles is required. A 1 kW dual rotor single coreless stator AFPMSG, with concentrated winding is designed by using sizing equation in this research work. In order to analyze the characteristics of an electric machine analytical method formed on the solution of Maxwell equations and Finite Element Method (FEM) are used. The FEM results are more reliable as compared to the analytical method. However, FEM take long computation time as compared with the analytical method. This thesis presents a 2D analytical method to calculate the no load voltage of the coreless dual rotor AFPMSG. Furthermore, to decrease the no load voltage total harmonic distortion (VTHD), initial model of the coreless AFPMSG is optimized by using the developed analytical method. The back EMF obtained by using the 2-D analytical method is confirmed by time stepped 3-D FEM for both the initial and xi optimized models. Finally, VTHD, torque ripple and output torque are compared for the initial and optimized models by using the 3-D FEM. It is demonstrated that the VTHD and torque ripples of the optimized model are reduced as compared to the initial model. Optimization by utilizing the 2-D analytical method reduces the optimization time to less than a minute. Furthermore, an AFPMSG model to reduce torque ripple is presented in this thesis. The proposed model uses arc-shaped trapezoidal PMs. The proposed model reduced cogging torque and torque ripple at the expense of lower average torque. Time stepped 3-D FEM is performed and the results are compared with the conventional model. It is demonstrated that the torque ripple of the proposed model is reduced as compared with the conventional model. To further improve the performance of the designed machine with proposed magnet shape, it''s PM shape is optimized. The Latin Hyper Cube Sampling (LHS), Kriging Method and Genetic Algorithm (GA) are introduced and employed in the proposed machine for the optimization. Asymmetric magnet overhang, interpolar separation of PMs and axial height of PMs are considered as the design variable for the optimization. The volume of the PMs is kept equal to the conventional shape magnet volume during optimization. It is demonstrated that the torque ripple of the optimized model is reduced and the average torque is increased as compared with the conventional and proposed models. The optimized model shows improvement in terms of the quality of the torque along with average output torque. The proposed coreless AFPMSG presents a suitable alternative to meet increasing energy demand as compared to the conventional AFPMSG due to its reduced cogging torque and torque ripple and increased output power and torque. The research work presented in this thesis seems to be an attractive option in the field of axial flux machine to be utilized for wind power applications.
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