Search from the table of contents of 2.5 million books
Advanced Search (Beta)
Loading...
Loading...
Loading...

ڈاکٹر احمد لاری

ڈاکٹر احمر لاری مرحوم
۲۸؍ فروری کو پروفیسر احمر لاری بیاسی برس کی عمر میں اپنے خالق حقیقی سے جاملے، اِناﷲ وَاِنا اِلَیہ رَاجِعُون۔ وہ گورکھپور یونیورسٹی کے شعبہ اردو سے تعلق رکھنے والے قابل اور محنتی استاد تھے جن سے ان کا شعبہ، ملک میں معروف ہوا اور وہ خود پروفیسر محمود الٰہی جیسے لائق ترین صدر شعبہ کی سرپرستی و رہنمائی میں ملک کے اچھے لکھنے والوں میں شمار ہوئے۔ بظاہر نجیف و نزار بیمار نظر آتے لیکن قلم بڑا توانا تھا۔ حسرت موہانی ان کی تحقیق کا مرکز رہے، ان کا تحقیقی مقالہ جوبعدمیں کتاب کی شکل میں شائع ہوا ان کی غیرمعمولی محنت سے اپنے موضوع پر اسی طرح مصدر و مرجع بن گیا جیسا خود ان کے ایک رفیق پروفیسر افغان اﷲ خاں مرحوم کا فراق پر مقالہ تھا، حسرت موہانی سے ان کا یہ تحقیقی تعلق، مستقل رشتے میں یوں بدلا کہ انہوں نے حسرت موہانی کے تذکرہ شعراء اور ارباب سخن کوبھی مرتب کرکے شائع کیا۔ ارباب سخن کا مقدمہ ان کی تنقیدی صلاحیت کا بڑا خوبصورت آئینہ ہے جس میں اردو تذکرہ نگاری کا انہوں نے جامع اختصار سے جائزہ لیا ہے۔
ان کی کتابوں میں گلدستۂ نازنیناں، نکات سخن، غالب اور غالبیات اور اردو تنقید کا ارتقاء، نام بھی آتے ہیں۔ انہوں نے مختصر تاریخ گورکھپور بھی مرتب کی۔ ان کا اصل قصبہ لار تھا لیکن انہوں نے پیمان وفا گورکھپور سے ایسا باندھا کہ بالآخر اسی کی خاک کا حصہ ہوئے۔ بیماری آزاری کے باوجود وہاں کی علمی و ادبی مجلسوں میں ضرور شریک ہوتے، پروفیسر افغان اﷲ خاں مرحوم کے بعد ان مجلسوں میں ان کے دم سے رونق تھی۔ افسوس ان کے جانے کے بعد ویرانی کا احساس اور زیادہ ہوگا کہ محض علم و ادب کا ایک شیدائی ہی نہیں ایک ملنسار، غمگسار...

Assessing the Relevance of Indus Waters Treaty to the International Law on NonNavigational Uses of the International Watercourses

Indus Waters Treaty is the most comprehensive and complex document which divides Indus Rivers System between India and Pakistan. It has continued to function through three wars and various political tensions between both neighboring states. It was signed in 1960 when no international law was available to deal the non-navigational uses of the international watercourses. Since the Helsinki rules were adopted by the International Association of Law in 1966 and the United Nations Convention on International Water Courses was approved by the United Nations General Assembly in 1997, both documents have little effect on the terms and conditions of the Indus Waters Treaty. This paper is an attempt to explore the relevance of the provisions of the Treaty to the contemporary international law on non-navigational uses of the international rivers

Numerical Methods for Phase-Field Model and its Applications to Multi-Phase Flow

Numerical Methods for Phase-field Model and its Applications to Multi-phase Flow Numerical methods for solving partial differential equations (PDEs) were used first by John von Neumann in the mid of 1940s as an effective tool. Since then, numerical computing has become the most versatile tool to experiments and complement theory. In principle, all mathematical equations can be easily solved numerically in comparison to the theoretical approach. They are low cost, high efficiency and no danger when compared with experimental approach. The driving force of numerical methods comes from practical application in all branches of science, engineering and other disciplines. The starting point of computational methods is a mathematical model, the form and origin of which depends on the particular field of study. There exist many important physical and biological processes in nature that can be represented by mathematical models. However, a physical and mathematical interpretation of the models and their numerical solutions is always a vital part of the computational science. Although, analytical solutions are difficult to obtain for many complex phenomena governed by nonlinear PDEs. However, with the rapid development in computational techniques and availability of high-speed computers, there is a continuously widening scope of nonlinear problems that can be solved numerically. Appropriate numerical algorithms, in particular those for solving time-dependent nonlinear PDEs are in heart of many of advanced scientific computations and software development. Moving free boundary problems are present in nature and many areas of physical and biological sciences. Examples include impact of a droplet on a solid surface, image segmentation, surface waves, jet breakup, realistic interfaces in animation movies, crystal and tumor growth and many others where the simulation of moving interfaces plays a key role in the problem to be solved. In dealing with moving boundary problems, an important consideration is how to model the moving boundary or interfacial surface on which the boundary conditions are imposed. Mathematical models adopted both in analytical and numerical studies for variety of free boundary problems are classified into two types, sharp interface and diffuse interface models. Sharp interface models like (level set method ) assumes that the interface has zero thickness. However, in phase transition, the existence of transition zone introduced an idea of diffuse interface by Gibbs, which allow the interface to have finite thickness. A type of diffuse interface model with particular interest is phase-field based model by the introduction of an order-variable representing the interface. In such approach, the phase-field variable is continuous as a function of space and time. Nevertheless, the partial differential equations describing the two-phase flow are highly nonlinear and numerical simulation is often necessary to solve them. This is why phasefield methods are numerically attractive with no tracking of interface explicitly but can be obtained as a part of the solution processes. This work deals with the development of numerical methods for solving phase-field models with some real world applications. There are several discretization method like finite difference method, finite volume method and finite element method etc. We have adapted the conforming finite element method for spatial discretization and have used different diagonally implicit schemes for time discretization. The performance of the proposed numerical algorithms in term of their accuracy and CPU time are demonstrated. The comparisons with analytical, experimental and numerical results are also provided for validation and verification of the computed results. The numerical simulations were carried out using DUNE-PDELab, which is a software tool for solving partial differential equations. This thesis is organized as follows: In chapter 1, an introduction of the phase-field models with some fundamental aspects and applications are given. Chapter 2 provides numerical methods with some discretization techniques and their modifications. Chapter 3 is based on the development of an efficient time stepping scheme for solving of 2ndorder nonlinear Allen-Cahn equation. Error estimates at different degrees of freedom are also provided using available exact solution. In chapter 4, the method developed in chapter 2 is further extended to solve 4th-order Cahn-Hillard equation with variable mobility. In chapter 5, a system of Allen-Cahn equation coupled with heat equation is solved with its application to dendritic crystal growth phenomena. Chapter 6 is based on the mathematical modeling and its numerical simulation of tumor hypoxia targeting in cancer treatment. Chapter 7 concludes this work with some future research directions.
Asian Research Index Whatsapp Chanel
Asian Research Index Whatsapp Chanel

Join our Whatsapp Channel to get regular updates.

مطالعہ یہودیت
مطالعہ یہودیت

Written for students who likely have either no knowledge of Judaism or else come to the subject with preconceptions highly colored by political and religious polemics, this book offers a comprehensive introduction to the Jewish tradition from religious, historical, and cultural perspectives.

Quick Facts

Books

6,354,844

Chapters

56,049,112

Links

5,151,285

Accessible Chapters

13,012,685