احسان اﷲ ثاقب(۱۹۴۲ء۔۲۰۱۴ء) پسرور میں پیدا ہوئے۔ آپ معروف رومانوی شاعری فاخر ہریانوی کے بیٹے ہیں- اعلی تعلیم حاصل کرنے کے بعد محکمہ تعلیم میں ملازمت اختیار کی۔ (۹۸۲)آپ کا ایک شعری مجموعہ ’’شہرِ غزل‘‘ کے نام سے معراج پر نٹرز لاہورسے ۲۰۰۶ء میں شائع ہوا۔ اس کے علاوہ کچھ شعری مسودات ہیں جو شائع نہیں ہو سکے۔ احسان اﷲ ثاقب غزل گو شاعر ہیں۔ ان کا اردو ادب میں بڑا کارنامہ یہ ہے کہ انھوں نے اپنے شعری مجموعے ’’شہرِ غزل‘‘ میں بیس بحور کے چھیاسی اوزان میں بڑی خوبصورتی سے طبع آزمائی کی ہے۔ آج ارد وشاعری میں کوئی قدآور شاعر بھی اتنی تعداد میں بحور اور اوزان میں شعر نہیں کہہ سکا ہے۔ انھوں نے ایک نئی بحر کا بھی اضافہ کیا ہے۔ جسے انھوں نے ’’بحرِ مترنم‘‘ کانام دیا ہے۔ یہ بحر تمام عروضی تقاضوں کو پورا کرتی ہے۔
حوصلہ مندی ،بلند فکری ،اخلاقیات، پیارو محبت،سماجی شعور اور توحید احسان اﷲ ـثاقب کی شاعری کے اہم موضوعات ہیں۔ اس حوالے سے نمونہ کلام ملاحظہ ہو:
جسم کے روح سے رابطے ہیں بہت
;اس تعلق میں بھی فاصلے ہیں بہت
5عمر درکار ہے اس سفر کے لیے
7ہجر سے وصل تک مرحلے ہیں بہت
(۹۸۳)
9ہمیں چلنا ہے ترچھے زاویوں پر
;مگر رہنا ہے پھر بھی راستوں پر
(۹۸۴)
Hazrat Abdul Rehman (may Allah be pleased with him) belonged to Arab tribe of Quraish and was a close relative of Mohammad (peace be upon him). At the time of conquest of Makkah He (may Allah be pleased with him) entered the circle of Islam. He (may Allah be pleased with him) is counted among the companions of Muhammad (may Allah be pleased with him) who came to sub-continent specially Balochistan in order to preach for Islam and Jihad during the Khilafat of orthodox caliphs. He (may Allah be pleased with him) came to Balochistan twice for Jihad and conquests first during the Khilafat of Hazrat Usman (may Allah be pleased with him) and second time in the early era of Hazrat Muawia (may Allah be pleased with him). He (may Allah be pleased with him) played a vital role in the wars of Balochistan. He (may Allah be pleased with him) established Zehri his abode and capital after conquering Kalat, Khuazdar (Sajistan), Kachi, Gandhava, and Chaghi, and from here he expanded the series of his conquests till Kabul and Qandar. Besides this, he included many areas of sub-continent in the Islamic empire of conquered areas. His (may Allah be pleased with him) life is consists of great chapters of sincerity in deeds. Wisdom and valor, determination fearlessness, strife, hospitality, simplicity and patience. He (may Allah be pleased with him) is counted among the great generals of Islam had the honour to have carried the message of Holy faith in every corner of Balochistan in tough and unfavorable conditions and planted the flag of Islam in Balochistan forever.
Every successful software product is required to be maintained at some later stage of its life cycle. This maintenance is constrained in different ways by its cost, lead-time, and quality. These constraints are not always straightforward enough to be precisely quantified and understood. If a company can predict the maintenance in advance it can plan its business accordingly. This can be attributed to software engineer’s ability to model the predicted maintenance effort required early in the development cycle. The customers now have keen interest in software quality requirements (i.e. quality attributes (QAs)), like maintainability, reliability, performance, and flexibility too. Therefore, the maintenance may be required from the product’s functionality or its quality point of view. Software architecture is an excellent vehicle to showcase the changes, especially related to QAs that take place over the time. The QAs are interlinked with each other that make the maintenance effort estimation more complex. Unless, we have effective maintenance profiles maintained from very early in the development cycle, it is quite difficult to achieve quality according to customer satisfaction. In this thesis, efforts have been made to identify mechanisms which ensure early maintenance prediction. Software architecture, in our opinion, is one such artifact which can effectively be used to address the above mentioned problems. Software architecture has assumed greater significance over the past two decades as an artifact which not only plays vital role in development of quality software but also in its maintenance and up gradation. In this thesis a methodology for prediction of software system’s maintenance based upon their software architecture design has been defined. As a secondary step the thesis also presents a complete methodology for ripple effect analysis based on quality attribute in order to cover the maintenance of software quality in addition to its functionality. The proposed method enables us to predict the overall maintenance effort quite early in the software development life cycle and provides an insight whether the components will remain consistent after the change or it will be come fluent and inconsistent. The proposed method can also help in better understandability of the software and consequently more reliable early planning.