CREB - Center for Research in Economics and Business

CREB Staff Publications: Journal Articles and Book Chapters

Journal Articles

Intrahousehold Consumption Allocation and Demand for Agency: A triple experimental investigation
American Economic Journal: Applied Economics (Forthcoming)
Uzma Afzal, Giovanna d’Adda, Marcel Fafchamps and Farah Said

Home-based Enterprises: Experimental Evidence on Female Preferences from Pakistan
Economic Development and Cultural Change (Forthcoming)
Azam Chaudhry, Giovanna d’Adda, Mahreen Mahmud and Farah Said

Where to Locate? The Correlation Between Spatial Proximity and Location Choice of New Firms: The Case of Pakistan
Asian Economic Journal, Volume 35, Issue 2, 187–208, 2021
Azam Chaudhry and Maryiam Haroon

First integrals of Hamiltonian systems: The inverse problem
Discrete & Continuous Dynamical Systems-S, Volume 13, Issue 10, 2829-2840, 2020
Azam Chaudhry, F. M. Mahomed and R. Naz

COVID-19 and the Future of Microfinance: Evidence and Insights from Pakistan
Review of Economic Policy, Vol 36, Issue Supplement_1, 2020
Kashif Malik, Muhammad Meki, Jonathan Morduch, Timothy Ogden, Simon Quinn and Farah Said

Are Agricultural Markets in the Punjab Technically Efficient?
The Lahore Journal of Economics, Vol 25(1), 2020
Fatima Arshad, Naved Hamid and Mahniya Zafar

Unskilled Migration, Child Labor and Human Capital Accumulation of Left behind
The Lahore Journal of Economics, Vol 25(2), 2020
Yumna Hassan and Waqar Wadho

It is not power, but how you use it: Experimental evidence on altruism from households in Pakistan
Applied Economic Letters,Vol 27(5), 2019
Azam Chaudhry, Giovanna d’Adda, Mahreen Mahmud and Farah Said

The Role of Bundling in promoting Sustainability of Health Insurance: Evidence from Pakistan
Geneva Papers on Risk and Insurance,Volume 44-5, 2019
Hamna Ahmed and Sadia Hussain

Young innovative companies and employment creation, evidence from the Pakistani textiles sector World Development,
Vol 117 (7), 2019
Azam Chaudhry, Micheline Goedhuys and Waqar Wadho

Public Spending, Quality of Bureaucracy and Economic Growth: A Theoretical Analysis
The Pakistan Development Review,58(2), 203-221, 2019
Shaheen Naseer

Identifying and Understanding the High Growth Firms in Pakistani Textiles and Apparel sectors
The Lahore Journal of Economics,Vol 24(2), 2019
Azam Chaudhry and Waqar Wadho

Organizational Inertia and Public Policy Outcomes
Academy of Management Proceedings, Vol. No. 1, p. 19261, Briarcliff Manor, NY 10510: Academy of Management, 2019
Klaus Heine and Shaheen Naseer

Productivity Dispersion across Districts in Punjab
The Lahore Journal of Economics, Vol 24(2), 2019
Mayiam Haroon

Analyzing the Impact of Initial Imprints on a Bureaucratic Organization: The Case of Pakistan
Academy of Management Proceedings, Vol. No. 1, p. 18816, Briarcliff Manor, NY 10510: Academy of Management, 2019
Klaus Heine and Shaheen Naseer

Two Sides of the Same Rupee? Comparing Demand for Microcredit and Microsaving in a Framed Field Experiment in Rural Pakistan
The Economic Journal, 128(614), 2161-2190, 2018
Uzma Afzal, Giovanna d’Adda, Marcel Fafchamps, Simon Quinn and Farah Said

Innovation and Firm Performance in Developing Countries: The case of Pakistani Textiles and Apparel Manufacturers
Research Policy, Volume 47, Issue 7, pp 1283-1294, 2018
Azam Chaudhry and Waqar Wadho

Bureaucratic Identity and the Shape of Public Policy: A Game Theoretic Analysis
Academy of Management Proceedings, Vol. No. 1, p. 16757, Briarcliff Manor, NY 10510: Academy of Management, 2018
Klaus Heine and Shaheen Naseer

Closed-form solutions of the Lucas-Uzawa model with externalities via the partial Hamiltonian approach
Computational and Applied Mathematics, Volume 37, Issue 4, 5146–5161, 2018
Azam Chaudhry and Rehana Naz

Government Size and Economic Growth in an Endogenous Growth Model with Rent‐Seeking
Economics & Politics, Volume 30, Issue 1, pp 151-179, 2018
Umair Ayaz and Waqar Wadho

Is Pakistan Ready to Embrace Fintech Innovation?
The Lahore Journal of Economics, 23: 2: pp. 151–182, 2018
Bushra Naqvi, Syed Kumail Abbas Rizvi and Fatima Tanveer

Closed-form Solutions for the Lucas-Uzawa Growth Model with Logarithmic Utility Preferences via the Partial Hamiltonian Approach
Discrete and Continuous Dynamical Systems Series S, Volume 11, Issue 4, 643-654, 2018
Azam Chaudhry and Rehana Naz

Diversification on Small farms: An Empirical Investigation of Panel Data for 2001-10
The Lahore Journal of Economics, 22: SE, 233 - 250, 2017
Sadia Hussain and Farah Said


Exchange Rate Management and Economic Growth: A Brewing Crisis in Pakistan
The Lahore Journal of Economics, Special Edition, pp.73-110, 2017
Naved Hamid and Azka Sarosh Mir


Economic Geography and misallocation in Pakistan’s manufacturing hub
The Annals of Regional Science, doi:10.1007/s00168-017-0824-7, 2017
Theresa Chaudhry, Maryiam Haroon and Muhammad Haseeb


Free Trade: Does Myopic Policy Overlook Long-Term Gains?
The Lahore Journal of Economics, 22:2, pp.65-88, 2017
Maryiam Haroon


Pakistan's Experience with the Pak-China Free Trade Agreement: Lessons for CPEC
The Lahore Journal of Economics, Volume 22, Issue SE, 1-24, 2017
Azam Chaudhry, Theresa Chaudhry and Nida Jamil


On the Origins and Development of Pakistan’s Soccer-Ball Cluster
The World Bank Economic Review, Volume 30, Issue Supplement 1, S34 - S41, 2017
David Atkin, Azam Chaudhry, Shamyla Chaudry, Amit K. Khandelwal and Eric Verhoogen


Mobile Banking: A Potential Catalyst for Financial Inclusion and Growth in Pakistan
The Lahore Journal of Economics, Special Edition, pp. 251 – 281, 2017
Bushra Naqvi, Syed Kumail Abbas Rizvi and Fatima Tanveer


Organizational Barriers to Technology Adoption: Evidence from Soccer-Ball Producers in Pakistan
Quarterly Journal of Economics, Volume 132, Issue 3, 1101–1164, 2017
David Atkin, Azam Chaudhry, Shamyla Chaudry, Amit K. Khandelwal and Eric Verhoogen


Comparison of Closed-Form Solutions for the Lucas-Uzawa Model via the Partial Hamiltonian Approach and the Classical Approach
Mathematical Modelling and Analysis, Volume 22, Issue 4, 464-483, 2017
Azam Chaudhry and Rehana Naz


The Diversification and Sophistication of Pakistan’s Exports: The Need for Structural Transformation
The Lahore Journal of Economics, SE21, pp.99-127, 2016
Uzma Afzal and Maha Khan


Entrepreneurship and Innovation in the Digital Economy
The Lahore Journal of Economics, Special Edition, pp.273-312, 2016
Naved Hamid and Faizan Kalid


Same Jeans Same Stitch? A Comparison of Denim Production across Three Factories in Punjab, Pakistan
The Lahore Journal of Economics, Special Edition, 2016
Theresa Chaudhry and Mahvish Faran


Corruption, Tax Evasion and the role of Wage Incentives Endogenous Monitoring Technology
Economic Inquiry, Volume 54, Issue 1, pp 391-407, 2016
Waqar Wadho


Access to Finance and Agency: An Overview of the Constraints to Female-Run Enterprise
The Lahore Journal of Economics, 21: SE, 331 – 349, 2016
Farah Said


Innovation in the Textiles Sector: A Firm-Level Analysis of Technological and Non-technological Innovation
The Lahore Journal of Economics, 21-Special edition, pp129-166, 2016
Azam Chaudhry and Waqar Wadho


Closed-form solutions for the Lucas –Uzawa model of economic growth via the partial Hamiltonian approach
Communications in Nonlinear Science and Numerical Simulation, Volume 30, Issues 1–3, 299-306, 2016
Azam Chaudhry, F. M. Mahomed and Rehana Naz


A partial Lagrangian method for dynamical systems
Nonlinear Dynamics, Volume 84, Issue 3, 1783–1794, 2016
Azam Chaudhry, F. M. Mahomed and Rehana Naz


A Panel Data Analysis of Electricity Demand in the Pakistani Industrial Sector
Energy Sources Part B: Economics, Planning and Policy, Volume 11, Issue 1, 73-79, 2016
Azam Chaudhry


Risk Taking and Risk Learning after a rare event: Evidence from a field experiment in Pakistan
Journal of Economic Behavior and Organization, 118, 167 – 183, 2015
Uzma Afzal, Farah Said and Ginger Turner


Markup and Cost Dispersion across Firms: Direct Evidence from Producer Surveys in Pakistan
American Economic Review, Papers & Proceedings, Volume 105, Issue 5, 537–544, 2015
David Atkin, Azam Chaudhry, Shamyla Chaudry, Amit K. Khandelwal and Eric Verhoogen


The effects of external migration on enrolments, accumulated schooling and dropouts in Punjab
Applied Economics, Volume 47, Issue 16, 1607-1632, 2015
Rabia Arif and Azam Chaudhry


The Economic Impact of New Firms in Punjab
The Lahore Journal of Economics, SpE20, pp.143-182, 2015
Azam Chaudhry and Maryiam Haroon


Does genetic proximity to high growth countries affect a country's own growth?
Economic Modelling,Volume 51, 444-453, 2015
Azam Chaudhry and Rabia Ikram


Organization, Management, and Wage Practices in Pakistan’s Electrical Fan and Ready-Made Garment Sectors
The Lahore Journal of Economics, Special Edition, 2015
Theresa Chaudhry and Mahvish Faran


Pakistan: A Case of Premature Deindustrialization?
The Lahore Journal of Economics, Special Edition, pp.107-141, 2015
Naved Hamid and Maha Khan


Growth in Pakistan: Inclusive or Not?
Pakistan Development Review Special Edition 54 (4), pp.335-350, 2015
Maryiam Haroon and Zunia Saif Tirmazee


Education and Maternal Health in Pakistan: The Pathways of Influence
The Lahore Journal of Economics, 20(2), 2015
Uzma Afzal and Shandana Dar


The Intersection of Caste, Social Exclusion and Educational Opportunity in Rural Punjab
International Journal of Educational Development, 43, pp. 51-62, 2015
Tayyaba Tamim and Hana Tariq


Patterns of Export Diversification: Evidence from Pakistan
The Lahore Journal of Economics, SE Vol. 19, 307-326, 2014
Hamna Ahmed and Naved Hamid


Microinsurance Demand after a Rare Event: Evidence from a field experiment in Pakistan
The Geneva Papers on Risk and Insurance – Issues and Practice 39, 201 – 223, 2014
Uzma Afzal, Farah Said and Ginger Turner


Education, Rent seeking and the Curse of Natural Resources
Economics & Politics, Volume 26, Issue 1, pp 128-156, 2014
Waqar Wadho


The Need for a Coordinated Industrial Strategy to Boost Pakistani Exports: Lessons from Asia
The Lahore Journal of Economics, Volume 19, Issue SE, 177-206, 2014
Gul Andaman and Azam Chaudhry


Exporters in Pakistan and Firms Who Do Not Export: What’s the Big Difference
The Lahore Journal of Economics, Special Edition, 2014
Muhammad Haseeb Ashraf and Theresa Chaudhry


Determinants of School Choice: Evidence from Rural Punjab, Pakistan
The Lahore Journal of Economics, 19(1), pp.1-30, 2014
Hamna Ahmed and Sahar Amjad Sheikh


Reviewing Pakistan's Import Demand Function: A Time-Series Analysis, 1970-2010
The Lahore Journal of Economics, Special Edition, pp.371-393, 2014
Resham Naveed and Zunia Saif Tirmazee


A Partial Hamiltonian Approach for Current Value Hamiltonian Systems
Communications in Nonlinear Science and Numerical Simulation, Volume 19, Issue 10, 3600-3610, 2014
Azam Chaudhry, F. M. Mahomed and Rehana Naz


The Textiles and Garments Sector: Moving up the Value Chain
The Lahore Journal of Economics, Special Edition, pp.283-306, 2014
Naved Hamid, Ijaz Nabi and Rafia Zafar


Language, Social Capital and Inequality
NUML Journal of Critical Inquiry Vol 12 (2), 1-23, 2014
Tayyaba Tamim


Analyzing Pakistan’s Trade Opportunity with Turkey
The Lahore Journal of Economics, SE19, 349 – 370, 2014
Asha Gul


An Impact Assessment of Expected Future Turmoil Risk on FDI: A Panel Data Analysis of Developing Countries
The Lahore Journal of Economics, 19 (2), 101 – 128, 2014
Mahvish Faran


Languages in Education and Implications for Poverty Reduction
Lahore Journal of Policy Studies. Vol.5, 7-28, 2014
Tayyaba Tamim


The State of Health in Pakistan: An Overview
The Lahore Journal of Economics, SE18, pp.233–247, 2013
Uzma Afzal and Anam Yusuf


Microinsurance in Pakistan: Progress, Problems, and Prospects
The Lahore Journal of Economics, Special Edition, 2013
Theresa Chaudhry and Fazilda Nabeel


Control Rights, Bureaucratic Corruption and the Allocation of Resources
European Journal of Law and Economics, Volume 35, Issue 1, pp 41-59, 2013
Waqar Wadho


Patronage in Rural Punjab: Evidence from a New Household Survey Dataset
The Lahore Journal of Economics, Volume 18, Issue SE, 183-209, 2013
Azam Chaudhry and Kate Vyborny


Higher education, languages and persistence of inequitable structures for working class women in Pakistan
Gender and Education, Vol 25, No (2) pp.155-169, 2013
Tayyaba Tamim


Los Clusters y el Uso de Marcas Colectivas en Censorcios de Exportaction
Trimestre Economico, 50(1), 2013
Theresa Chaudhry


The politics of languages in education and issues of access and participation in the multilingual context of Pakistan
British Educational Research Journal. 2013
Tayyaba Tamim


A Structural V AR analysis of the impact of macroeconomic shocks on Pakistan's textile exports
Economic Modelling, Volume 32, 302-315, 2013
Azam Chaudhry and Syed Kalim Hyder


The Political Economy of Income Comparisons and Economic Growth
Volume 31, 214-222, 2013
Azam Chaudhry


What Matters in Child Health: An Instrumental Variable Analysis
Child Indicators Research 6(4), 673-693, 2013
Uzma Afzal


Rethinking The Role of L1 in L2 Learning. BNU Journal of Education,
Vol 1. 49-68, 2013 Tayyaba Tamim

Remittances from Saudia Arabia: A community phenomenon
Pakistan Development Review, Special Edition 51 (4), 245 – 258, 2012
Asha Gul and Mahreen Mahmud


Determinants of Export Performance in the wake of the Global Financial Crisis: Evidence from South Asia Pakistan
Development Review, Special Edition 57 (4), 2012
Hamna Ahmed and Farah Said


The Impact of Public School Enrolment on Child Labour in Punjab Pakistan
Lahore Journal of Economics, Vol. 17:2, pp.1-34, 2012
Hamna Ahmed


The Birth of Exporters: Entry and Scale of Firms in Punjab’s Export Sectors
The Lahore Journal of Economics, Special Edition, pp.191–212, 2012
Azam Chaudhry, Maryiam Haroon and Marjan Nasir


Human Capital Convergence: Evidence from Punjab
The Lahore Journal of Economics, 17(1) 46 – 61, 2012
Uzma Afzal


The Opportunities and Pitfalls of Pakistan’s Trade with China and Other Neighbors
The Lahore Journal of Economics, Special Edition, pp.271-292, 2012
Naved Hamid and Sarah Hayat


Macro Level Determinants of Poverty: Investigation through Poverty Mapping of Districts of Pakistan
Pakistan Development Review, Special Edition 53 (4), 2011
Mahreen Mahmud, Tareena Musaddiq and Farah Said


What Determines Innovation in the Manufacturing Sector? Evidence from Pakistan
Pakistan Development Review, Special Edition 53 (4), 2011
Hamna Ahmed and Mahreen Mahmud


Prospects for Cooperative Marketing among Surgical Instrument Producers in Pakistan
The Lahore Journal of Economics, 16(1), 2011
Theresa Chaudhry


Financing Constraints; Determinants and Implications for Firm Growth in Pakistan
The Lahore Journal of Economics, Vol. 16, 2011
Hamna Ahmed and Naved Hamid


Tariffs, Trade and Growth: Do Institutions Matter?
The Lahore Journal of Economics, Volume 16, Issue 2, 31-54, 2011
Azam Chaudhry


Norms of Cooperation, Trust, Altruism, and Fairness: Evidence from Lab Experiments on Pakistani Students
The Lahore Journal of Economics, Special Edition, 2011
Theresa Chaudhry and Misha Saleem


Contracting and Efficiency in the Surgical Goods Cluster of Sialkot, Pakistan
South Asia Economic Journal, Vol. 12, No. 1, 2011
Theresa Chaudhry


Estimating Residential Electricity Demand Responses in Pakistan's Punjab
The Lahore Journal of Economics, Special Edition, 2010
Theresa Chaudhry


Internal Migration Patterns in Pakistan: Case for fiscal decentralization
Pakistan Development Review, Special Edition 49 (4), 2010
Mahreen Mahmud, Tareena Musaddiq and Farah Said


Relational Contracting in Pakistan’s Surgical Instrument Cluster: An Empirical Study
Pakistan Development Review, 49(3), 2010
Theresa Chaudhry


A Panel Data Analysis of Electricity Demand in Pakistan
The Lahore Journal of Economics, Volume 15, Issue SE, 75-106, 2010
Azam Chaudhry


Capital Flows and Real Exchange Rate Overvaluation -A Chronic Ailment: Evidence from Pakistan
The Lahore Journal of Economics, Volume 14, Special Edition, pp.51-86, 2009
Hamna Ahmed


Total Factor Productivity Growth in Pakistan: An Analysis of the Agricultural and Manufacturing Sectors
The Lahore Journal of Economics, Volume 14, Issue SE, 1-16, 2009
Azam Chaudhry


Microeconomic Flexibility in India and Pakistan: Employment Adjustment at the Firm Level
The Lahore Journal of Economics, Special Edition, 2009
Theresa Chaudhry


The Effects of Rising Food and Fuel Costs in Pakistan
The Lahore Journal of Economics, Special Edition, 2008
Azam Chaudhry and Theresa Chaudhry


The Effects of Rising Food and Fuel Costs on Poverty in Pakistan
The Lahore Journal of Economics, Volume 13, Issue SE, 117-138, 2008
Azam Chaudhry and Theresa Chaudhry


Rethinking Pakistan’s Development Strategy
The Lahore Journal of Economics, Special Edition, pp. 47-62, 2008
Naved Hamid


Do Governments Suppress Growth? Institutions, Rent-Seeking and Innovation Blocking in a Model of Schumpeterian Growth
Economics and Politics, Volume 19, Issue 1, 35-52, 2007
Azam Chaudhry and Phillip Garner


Political Competition Between Countries and Economic Growth
Review of Development Economics, Volume 10, Issue 4, 666-682, 2006
Azam Chaudhry and Phillip Garner


Corruption and Trade Liberalization: Has the World Bank Anti-Corruption Initiative Worked?
The Lahore Journal of Economics, Volume 10, Issue 2, 111-140, 2005
Azam Chaudhry


IMF Stabilization Programs, Policy Conduct and Macroeconomic Outcomes: A Case Study of Pakistan
The Lahore Journal of Economics, vol. 11(1), pages 35-62, 2005
Nawaz A. Hakro and Waqar Wadho


Industrial Clusters in Developing Countries: A Survey of the Literature
The Lahore Journal of Economics, 10 (2), 2005
Theresa Chaudhry


The impact of decentralization on service delivery, corruption, fiscal management and growth in developing and emerging market economies: A synthesis of empirical evidence
CESifo DICE Report: Journal for Institutional Comparisons, 2004
Theresa Chaudhry, Anwar Shah and Heng-Fu Zou


Private Finance Companies in LDCs: Lessons from an Experiment
World Development, 17:8, pp. 128-1297, 1989
Naved Hamid and Ijaz Nabi


Role of Small Scale Industries in Employment Generation: Some Basic Issues
Pakistan Economic and Social Review, XXII: 1-2, pp. 43-64, 1984
Naved Hamid and Ijaz Nabi


Growth of Small Scale Industry
Industry Pakistan Economic and Social Review, XXI: 1-2, pp.37-76, 1983
Naved Hamid


Dispossession and Differentiation of the Peasantry
The Journal of Peasant Studies, 10:1, pp.52-72, 1982
Naved Hamid


Alternative Development Strategies, Monthly Review
26:5, pp. 31-52, 1974
Naved Hamid


Regional Inequalities and Capitalist Development
Pakistan Economic and Social Review, XII: 3, pp. 255-88, 1974
Naved Hamid and Akmal Hussain


The Burden of Capitalist – A Study of Real Wages and Consumption
Pakistan Economic and Social Review, XII: 1, pp. 46-70, 1974
Naved Hamid


Preconditions for Successful Implementation of the People’s Work Programme
Pakistan Economic and Social Review, X: 1, pp.43-62, 1972
Naved Hamid


Pakistan’s Economic System – A Stage of Transition
Pakistan Economic and Social Review, IX: 1-2, pp.47-79, 1971
Rashid Amjad and Naved Hamid


Book Chapters

Exports: Lessons from the Past and the Way Forward
in Rashid Amjad and Shahid Javed Burki (Eds.), Pakistan: Moving the Economy Forward, Cambridge University Press, 2015
Hamna Ahmed, Naved Hamid and Mahreen Mahmud

Beyond the Poverty Line: A Multi-dimensional Analysis of Poverty in Pakistan
Pakistan in Rashid Amjad and Shahid Javed Burki (ed.) Pakistan: Moving the Economy Forward, Cambridge University Press, 2015.
Uzma Afzal, Muhammad Haseeb Ashraf, Azam Chaudhry and Theresa Chaudhry

The Effect of Early Flood Warnings on Mitigation and Recovery during the 2010 Pakistan Floods
in Ashbindu Singh and Zinta Zommers (Eds.), Preventing Disaster: Early Warning Systems for Climate Change, United Nations Environmental Programme, 2014
Uzma Afzal, Karen Campbell, Farah Said and Ginger Turner


Migrant Remittances to South Asia: Determinants and Effect on Growth
in R M. K. Mujeri, & M. Wahiduddin (Eds.), Adjusting to Global Economic Volatility. The Case of South Asia. New Delhi: Academic Foundation, 2014
Naved Hamid and Mahreen Mahmud


Private Schooling: Determinants and Implications for Social Justice in Rural Punjab, Pakistan
I. Macpherson, S. Robertson, & G. Walford (Eds.), Education, Privatisation and Social Justice: Case studies from Africa, South Asia and South East Asia, 2014
Hamna Ahmed, Masooma Habib and Sahar Amjad Sheikh


Languages in education and symbolic violence in Pakistan
in Solly, M. & Ersch, E. (Eds.) Language and Globalization, Cambridge Scholar publications pp. 111-134, 2014
Tayyaba Tamim


Implementing Decentralized Local Governance: A Treacherous Road with Potholes, Detours, and Road Closures
in Jorge Martinez-Vazquez (ed.) Reforming Intergovernmental Fiscal Relations and the Rebuilding of Indonesia, Edward Elgar Press, 2004
Theresa Chaudhry and Anwar Shah


Industrial Incentive Structure: A Need for Reform
in Anjum Nasim (Ed.), Financing Pakistan’s Development in the 1990s, LUMS and Oxford University Press, 1992
Naved Hamid


Industry and Trade Chapter
in William E. James and Subroto Roy (Eds.), Foundations of Pakistan’s Political Economy – Towards an agenda for the 1990s, New Delhi: Sage Publications, 1992
Naved Hamid


Pakistan Country Chapter
in Anne Kruger, Maurice Schiff and Alberto Valdez (Eds.) The Political Economy of Agriculture Pricing Policy Volume 2, World Bank & John Hopkins University Press, 1991
Naved Hamid, Ijaz Nabi and Anjum Nasim


The Aid Partnership in Pakistan
in Transitions in Development: The Role of Aid and Commercial Flows, edited by U. Lele & I. Nabi. International Center for Economic Growth, 1991
Naved Hamid and Ijaz Nabi