دل کے اندر نہ مجھے آنکھ سے باہر سمجھو
میں وہ قطرہ ہوں کہ ہے جس میں سمندر، سمجھو
میں جو حیرت سے ہی تصویر بنی بیٹھی ہوں
میری حیرت کو مرا عکس مکرر سمجھو
ہیں تو آنکھیں ہی مگر بادہ و جام اُن پہ نثار
وہ نظر بھر کے جو دیکھیں اسے ساغر سمجھو
جس کو صحرائوں میں بھٹکے ہوئے رکھتے ہیں عزیز
میں ہوں وہ قطرہ مجھے عین سمندر سمجھو
اشک ہے، قطرہ ہے یا ابر سے ٹوٹا تارا
یہ فضاؔ جو بھی ہے اب تم اسے گوہر سمجھو
Poetry is one of the most prominent spiritual genres of mystic literature. Most of the mystics have expressed their thoughts in poetry. Mystic poetry is replete with metaphors of “wine”, “cup”, “tavern” and “wine-bearer” although, in Islam, the use of wine is strictly prohibited. However, the mystic poets make repeated use of such metaphors. This paper aims to compare the use of the metaphor of wine, cup, and tavern in the poetry of Rumi and Hafiz. Further, it spotlights the hidden meaning of mystical metaphors to make it expressible. The current research is based on Ricoeur’s hermeneutic model of understanding text which Ricoeur calls the Hermeneutic Arc. This study concludes that the cornerstone ideology beyond the use of metaphors is to awaken the sleeping souls, the negation of material pursuit, and realization of spiritual truth---Divine love and unity with God. Hafiz focuses on freedom, an eternity of soul, joy, and immortality; further. While Rumi talks about enlightenment of soul, union with Beloved and strong faith. Rumi’s use of language, imagery, and ideas are more powerful than Hafiz.
FACULTY OF INDUSTRIAL ENGINEERING Department of Industrial Engineering Doctor of Philosophy SURFACE FINISH OPTIMIZATION IN FACE MILLING GRADE 5 TITANIUM ALLOY FOR SUSTAINABLE MANUFACTURING By Imran Masood Sustainability achievement of difficult-to-machine materials is major concern now-a-days. In this work the machining sustainability of Ti-6Al-4V hardened up to 55 HRC is assessed through a novel technique of iso-response method, in which the response value i.e. surface finish is taken as criteria for evaluation and comparison among dry, conventional and cryogenic machining. Experiments were designed in DOE for central composite design and performed face milling of Titanium alloy Ti-6Al-4V using PVD coated carbide inserts under three conditions of cooling and measured the response values. Feed, speed and depth of cut were used as input parameters. The parameters giving nearly same response values in each scenario were used to evaluate the sustainability of each mode for cutting power, machining time, material removal rate, tool life and machining cost. Comparing the average results achieved by cryogenically cooled experiments, it is found that 61.9% less cutting power, 15.12% less machining time , 47.55 % less electricity cost and 47.59% less machine operating cost observed for cryogenically cooled experiments as compared with dry machining. Coolant cost is found 13.33 times cheaper for cryogenic as compared with conventional machining. Whereas increased material removal rate of 81.12% and increased cutting tool life by 5.2 times for cryogenic machining as compared to dry one. Furthermore on comparison of cryogenic machining with conventional machining, it is found that cutting time is saved by 3 %, cutting tool life is increase by 1.34 times, electricity cost is saved by 39 % and labour cost is saved by about 38%. iv The results indicate that cryogenic cooling is more sustainable as compared to dry and conventional cooling process. It was found that the cryogenic machining gives the best results for tool life, surface finish of machined part, productivity with least impact on the environment, least energy cost and machining cost. Findings of this research are helpful in assessing sustainability for machining industry to reduce tooling cost, machining cost, worker’s health problems, environmental impact and will help to select sustainable input parameters. The proposed model gives the machining industry a unique direction to adopt the sustainable input parameters.