Paradigms: A Research Journal of Commerce, Economics and Social Sciences ISSN 1996-2800, 2012, Vol. 6, No. 1, pp. 01-114. Copyright © 2012 Faculty of Commerce, University of Central Punjab All rights reserved. Paradigms A Research Journal of Commerce, Economics and Social Sciences Volume 6, Number 1, 2012 IN THIS ISSUE: Research Articles Trade Liberalization and Optimal Environmental Policies in Vertical Related Markets Yan-Shu Lin [pp: 1-19] Managing Innovation in View of the Uncertainties Anton Igorevich Mosalev [pp: 20-33] Governance change in Facilities Management: An Institutional Perspectives Muhammad Kaleem Zahirul Hassan [pp: 34-83] Problematic Internet use: Deficient self-regulation or pathology? ShumailaYousafzai, Uzma Javed, Mirellayani-De-Soriano [pp: 84-99] Working Capital Management And Corporate Performance Of Textile Sector In Pakistan Muzaffar Asad [pp: 100-114] i Paradigms A Research Journal of Commerce, Economics and Social Sciences Faculty of Commerce, University of Central Punjab, Lahore (Pakistan) Patron in Chief: Prof. Muhammad Azhar Ikram Ahmad Editor: Prof. Dr. Ather Azim Khan Joint Editor:Prof. Dr. Zahid Ahmad Associate Editor: Ms. Sundas Rauf Associate Joint Editor: Mr. Shafaqat Mehmood Sub Editor: Muzaffar Asad Editorial Board/Advisory Board Editorial Board/Advisory Board of Paradigms consists of PhD doctors, Scholars, Academic Researchers from all over the world. Dr. Jagdish Bhagwati Professor of Economics Columbia University, New York Dr. Philip E. Graves Professor University of Colorado at Boulder Dr. James Alm Professor and Chair Tulane University United States Dr. Jacques A. Schnabel Wilfrid Laurier University-School of Business & Economics Waterloo, Ontario, Canada Dr. Mia Muhmudur Rahim QUT Business School Queensland University of Technology Dr. Bob Carbaugh Professor of Economics Central Washington University ii Dr. Farida C. Khan Professor of Economics, University of Wisconsin-Parkside Dr. Fu Qiang SEBA,Chongqing University Chongqing, China Dr. Syed Nisar Hussian Hamdani Prof. of Econ. and Dean of Faculty of Arts, University of Azad Jamu and Kashmir Dr. Fatimah M. Arshad Director of Institute of Agricultural and Food Policy Studies, Putra University of Malaysia Dr. Abdul Ghafar Ismail Professor University Kebangsaan Malaysia Dr. I. Sundar Associate Professor of Economics Directorate of Distance Education, India Dr. Muhammad Zafarullah Pro-Rector University of Central Punjab Dr. Fehmida Sultana Dean Academics University of Central Punjab Dr. Qais Aslam Professor University of Central Punjab Dr. Zulfiqar Ali Khan Professor Faculty of Management Studies, UCP iii Reviewer Board Reviewer Board of Paradigms consists of PhD doctors, Scholars, Academic Researchers from all over the world. Dr. Richard Fairchild Lecturer of Corporate Finance University of Bath, school of Management United Kingdom Dr. Fatimah M. Arshad Professor, Director of Institute of Agricultural and Food Policy Studies Putra University of Malaysia Dr. Hasmiah Kasimin Associate Professor University Kebangsaan Malaysia Dr. Ruzita Abdul Rahim Associate Professor University Kebangsaan Malaysia Dr. Mohd. Rizal Palil Senior Lecturer Taylors University Dr. Smitha Geetha Lecturer Taylors University Dr. Lee Teck Heang Senior Lecturer Taylors University Dr. Law KianAun Assistant Professor University Tunku Abdul Rahman Dr. Noradiva Hamzah Associate Professor University Kebangsaan Malaysia Dr. Ong Seng Fook Assistant Professor University Tun Abdul Rahman Dr. Rika Fatimah P. L. Senior Lecturer University of Kebangsaan Malaysia Dr. Syed Nisar Hussian Hamdani Professor of Economics Dean of Faculty of Arts Dr. Kevin Low Lock Teng Associate Professor University Tun Abdul Rahman Dr. Barjoyai Bardai Professor University Tun Abdul Razak Dr. Doris Padmini Selvaratnam Senior Lecturer University of Kebangsaan Malaysia Dr. M. Harashid Haron Senior Lecturer University Sains Malaysia Dr. Abdul Ghafar Ismail Professor University of Kebangsaan Malaysia Dr. Aini Aman Associate Professor University of Kebangsaan Malaysia Dr. Muhammad Zakaria Dr. Tajul Ariffin Masron iv Assistant Professor COMSATS, Islamabad Senior Lecturer University Sains Malaysia Dr. Rauf-i-Azam Dean IMS Arid Agriculture University Rawalpindi Dr. Sami Ullah Lecturer, Department of Economics University of Gujrat Dr. Mehmood Khalid Senior Research Economist Pakistan Institute of Development Economics Dr. Usman Mustafa Chief, Training Program and Section Head Pakistan Institute of Development Economics Dr. Afzal Mahmood Statistical Officer Board of Revenue, Lahore v