Web-Based Information System Effectiveness

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AN ASSESSMENT MODEL FOR WEB-BASED INFORMATION SYSTEM EFFECTIVENESS

A THESIS SUBMITTED TO THE GRADUATE SCHOOL OF INFORMATICS OF THE MIDDLE EAST TECHNICAL UNIVERSITY

BY

GÜL TOKDEMĐR

IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN THE DEPARTMENT OF INFORMATION SYSTEMS

JANUARY 2009

Approval of the Graduate School of Informatics

_________________________ Prof. Dr. Nazife BAYKAL Director I certify that this thesis satisfies all the requirements as a thesis for the degree of Doctor of Philosophy. __________________________ Prof. Dr. Yasemin YARDIMCI Head of Department

This is to certify that we have read this thesis and that in our opinion it is fully adequate, in scope and quality, as a thesis for the degree of Doctor of Philosophy.

_________________________ Prof. Dr. Semih BĐLGEN Supervisor Examining Committee Members Assoc. Prof. Dr. Onur DEMĐRÖRS Prof. Dr. Semih BĐLGEN (METU, IS) _______________________ (METU, EEE) _______________________

Assist. Prof. Dr. Nergiz ÇAĞILTAY (ATILIM, SE) ________________________ Dr. Altan KOÇYĐĞĐT Dr. Sevgi ÖZKAN (METU, IS) ________________________ (METU, IS) ________________________

I hereby declare that all information in this document has been obtained and presented in accordance with academic rules and ethical conduct. I also declare that, as required by these rules and conduct, I have fully cited and referenced all material and results that are not original to this work.

Name and Surname: Gül Tokdemir Signature :______________

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ABSTRACT

AN ASSESSMENT MODEL FOR WEB-BASED INFORMATION SYSTEM EFFECTIVENESS

Tokdemir, Gül Ph.D., Department of Information Systems Supervisor: Prof. Dr. Semih Bilgen

January 2009, 130 pages

Information System (IS) effectiveness assessment is an important issue for the organizations as IS have become critical for their survival. With the incorporation of Internet technologies into the business environment, it is now more difficult to measure IS effectiveness, because Internet provides a borderless, non-stop, flexible communication medium. Assessing the effectiveness of web-based information systems (WIS) is vital for survival and competitive advantage which is a complicated

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subject since there are several interacting factors to consider. In the literature there are several methods proposed for IS assessment. However, those studies have been far from providing a broad, comprehensive evaluation framework for any type of web-based IS independent of its domain. In this study, a generic WIS effectiveness assessment framework is proposed. The framework is applied in case studies consisting of four organizations in e-commerce and e-banking domains.

Keywords: Web-based IS, IS effectiveness assessment

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ÖZ
WEB-TABANLI BĐLGĐ SĐSTEMLERĐ ĐÇĐN ETKĐLĐLĐK DEĞERLENDĐRME MODELĐ

Tokdemir, Gül Doktora, Bilişim Sistemleri Tez Yöneticisi: Prof. Dr. Semih Bilgen

Ocak 2009, 130 sayfa

Bilgi sistemlerinin (BS) etkililiğinin değerlendirilmesi, organizasyonların yaşam döngüsünde kritik önem arzetmektedir. Çünkü günümüzde. Internet teknolojilerinin iş ortamlarına girişiyle birlikte, bilgi sistemlerinin etkiliğinin ölçülmesi daha da zor hale gelmiştir, çünkü Internet sınırları olmayan, sürekli çalışabilen, esnek bir iletişim ortamı sağlamaktadır. Web Tabanlı Bilgi Sistemlerinin (WBS) etkliliğinin ölçülmesi organizasyonların devamlılığını sağlamaları ve rekabetçi ortamda varolabilmeleri olabilmeleri için gerekli olan, ancak birbiriyle etkileşimde olan faktörleri içermesi dolayısıylada karmaşık bir konudur. Literatürde bilgi sistemlerinin değerlendirilmesi konusunda çeşitli çalışmalar mevcuttur. Ancak bu çalışmalar, genel, kapsamlı ve etki vi

alanından bağımsız bir WBS etkililik değerlendirmesinden çok uzaktır. Bu çalışmada, genel bir WBS etkililik değerlendirme modeli sunulmaktadır. Bu model örnek olay incelemesi olarak e-ticaret ve e-banka alanlarındaki dört şirkete...
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