Browsing by Author "Rehan, Mohammad"

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Citation Count: 0
Basic issues in forming a world-class supply chain
(Association for Computing Machinery, 2015) Akyuz,G.A.; Rehan,M.; Information Systems Engineering; Industrial Engineering
Supply chain management (SCM) practices in today's global, complex, networked and web-enabled business conditions demand world-class performance from all chain partners. This study addresses the basic issues in becoming a world-class supply chain. The main aspects involving people, process and technology dimensions are put forward and comprehensively discussed. It is revealed that along with the IT-based integrity issues and performance management aspects, managing the soft concepts such as 'leadership in an extended context' and 'trust-based relationships' appear as the keys for success. © 2015 ACM.
Bilgi yönetimi sistemi üzerinde bir durum çalışması ve gerçekleştirme stratejisi
(2007) Haspolat, Turgut; Rehan, Mohammad; Information Systems Engineering
Günümüzde kurumlar içinde birçok bilgi üretilmektedir. Bu bilgilerin en iyi sekilde korunması, islenip anlamlandırılarak etkili is kararları almada kullanılabilmesi gereklidir. Bu nedenle etkin is kararları almak, sahip olunan bilgileri paylasmak ve bilginin kullanılabirligini daha kolay hale getirmek isteyen kurumlar, kurumsal portal çözümlerine ihtiyaç duymaktadırlar. Kurum ve kuruluslar, bilgi yönetimi yardımı ile, organizasyonel amaçlarını gerçeklestirmek için, toplamak, düzenlemek ve kayıt altına almak sureti ile bilgiye dogru zamanda, dogru yerde ve dogru kimseler tarafından ulasılabilmesini saglarlar. Bu tezde kurumsal bilgi yönetimin ne oldugu, gelisimi ve önemi anlatılmıstır. Tüm bunlar gözönüne alınarak kurumsal bilgi yönetimine iliskin varılan sonuçlar açıklanmıs, kurum içinde prototip olarak gelistirilen bir bilgi yönetimi uygulaması ile çözüm önerilerinde bulunulmus ve kurum için önemi belirtilmistir. Bu kapsamda, web sitelerine erisimi etkin hale getirmek ve kullanıcı gereksinimlerini karsılayacak sekilde düzenleyerek bilgi yönetimini desteklemek amacıyla gelistirilen portal yazılımının sagladıgı temel servisler ve gelistirme asamaları özetlenmistir. Gelistirilen portal yazılımının temel mimari yapısı, bu mimari yapı içinde saglanan kisisel sayfa düzenleme, erisim yetki düzenlemesi, e-posta ve sistemlerle entegrasyon ve proje yönetimi detaylı olarak açıklanmaktadır. Anahtar kelimeler: Kurumsal portal, bilgi yönetimi, enformasyon, verimlilik.
Citation Count: 1
Cost anaylsis of interoperable based E-procurement system in the republic of Turkey
(Association for Computing Machinery, 2015) Imamoglu,M.Y.; Rehan,M.; Information Systems Engineering
Approximately 15% of the government's Gross Domestic Products (GDP) is spent on public procurement [1]. Therefore, accountability and transparency in public procurement is very important. For the regulation of public expenditures and effective use of the budget, not only public procurements but also efficient use of infrastructure that make up the system for public procurements should be considered. As a result, the importance of the electronic procurement processes is emphasized in this thesis. Public Procurement Authority (PPA) and the State Procurement and Supply Office (SPSO) responsible for public tenders in the Republic of Turkey are two foundations affiliated to the Ministry of Finance. However, in public procurement, both institutions have their own system, own business processes and legal obligations. Yet is it a privilege to have two different systems? To find the answer to this question, interoperable based Public electronic Procurement (PeP) system and current PeP system are compared with the cost analysis study for the Republic of Turkey. © 2015 ACM.
Citation Count: 3
Designing Senior Graduation Project Course for Computing Curricula: An Active Learning Approach
(Tempus Publications, 2010) Kilic, Hurevren; Koyuncu, Murat; Rehan, Mohammad; Computer Engineering; Information Systems Engineering
This paper proposes an active learning-based design approach to senior graduation project courses for computing curricula. The proposed approach focuses mainly on course requirements including increasing the interaction between instructor and project team members; providing better and fair student/team performance assessment; encouraging students to practise life-cycle driven development; preparing students for role-based team-working; motivating students to communicate with experts from industry and supporting cooperation between students. It is observed that implementation of the proposed approach increases the student course satisfaction level while higher quality student projects are achieved.
Citation Count: 2
Designing senior graduation project course for computing curricula: An active learning approach
(2010) Kilic,H.; Koyuncu,M.; Rehan,M.; Computer Engineering; Information Systems Engineering
This paper proposes an active learning-based design approach to senior graduation project courses for computing curricula. The proposed approach focuses mainly on course requirements including increasing the interaction between instructor and project team members; providing better and fair student/team performance assessment; encouraging students to practise life-cycle driven development; preparing students for role-based team-working; motivating students to communicate with experts from industry and supporting cooperation between students. It is observed that implementation of the proposed approach increases the student course satisfaction level while higher quality student projects are achieved. © 2010 TEMPUS Publications.
E-satınalma'nın kurumsal kaynak planlama (ERP) sistemlerinin e-tedarik zinciri entegrasyonundaki rolü üzerine araştırma temelli bir çalışma
(2008) Akyüz, Göknur Arzu; Rehan, Mohammad; Information Systems Engineering; Industrial Engineering
Bu tez çalışması, e-Satınalma konusunun Kurumsal Kaynak Planlama (ERP) ve e-Tedarik Zinciri konusundaki rolünü ortaya koymayı amaçlar. Çalışmada, ERP, e-satınalma ve e-tedarik zinciri konularında üç yönlü literatür taraması yapılmıştır. Daha sonra; bu üç konudaki teknolojik alt yapı ile ilgili olarak, XML tabanlı standardizasyon çabaları ve sektörün önde gelen tedarikçilerin entegrasyon platformları konularında araştırma temelli karşılaştırmalı bir çalışma yapılmıştır. Bu çalışmadan elde edilen genellemelerin, web teknolojileri tabanlı geliştirilecek kavramsal modellere zemin oluşturması hedeflenmektedir.Çalışma, e-satınalma, Kurumsal Kaynak Planlama ve e-tedarik zinciri konularını tek başına ele almayıp bu üç konunun ilişkileri, öncelikleri ve entegrasyon konusuna odaklanmıştır.Anahtar Kelimeler: e-Tedarik Zinciri, e-Satınalma, Kurumsal Kaynak Planlama (ERP) , İş Süreçleri Yeniden Yapılandırma (BPR)
Citation Count: 10
Enterprise Application Integration (EAI), Service Oriented Architectures (SOA) and their relevance to e-supply chain formation
(Academic Journals, 2010) Rehan, Mohammad; Akyuz, Goknur Arzu; Information Systems Engineering; Industrial Engineering
The greatest challenge of e-supply chain formation is the integration of cross-application processes in a seamless manner. As platform independent, web-based interoperability are becoming key issues in web-based integration and supply chain formation, organisations are in search of architectural solutions to overcome these challenges. Thus, this paper focuses on the service oriented architectures (SOA) as the recent trend in cross-platform enterprise application integration. SOA paradigm is discussed in detail with special focus on e-supply chain formation. Findings indicate that SOA still appears as the most convenient paradigm to meet the challenges of today's e-supply chain formation requirements.
Citation Count: 4
Evaluation of Turkish public e-procurement systems: An analysis of critical success factors
(IGI Global, 2011) Imamoglu,M.Y.; Rehan,M.; Information Systems Engineering
In today's global economy, organizations must focus on customer oriented business models to use information technologies not only for suppliers and customers, but also for effective communication and collaboration with public agencies. This requires real-time exchange of information in standard formats and publishing widely in the process by encouraging the provision of e-commerce with the application of Internet technologies in the supply chain. It can be applied to any type of governmental affairs, such as training, provision of justice, tax audits, budget execution, financial control, and also procurement for the purposes of this research project. However all these needs to gain strong expertise and competence of technological and administrative talent is needed to make the government and suppliers together via the Internet. The aim of this work is to introduce the evaluation processes and tools using the technique of SWOT analysis in the existing studies to provide empirical illustration of how this perspective would be used to give a sense of public e-procurement in action and it also aims to make a new sustainable reliable e-governmental model that includes change management, interdepartmental coordination, resolving the security and authentication for implementing public e-procurement in the frame of Turkish e-Government infrastructure and projects. In this context, a key objective is to develop Governmental policy regarding interactions with private and public sectors. In order to minimize information transformation initiatives, risks, and policy implementation should focus on promoting strengthening effective and affordable connectivity and interoperability. © 2011, IGI Global.
Citation Count: 6
Examination of factors influencing employees' adoption of mobile commerce and services in Turkey
(Routledge Journals, Taylor & Francis Ltd, 2016) Akman, Ibrahim; Rehan, Mohammad; Information Systems Engineering; Computer Engineering
This study first reviews and discusses mobile technology issues from a global perspective, and then investigates the impact of demographic (gender, age, income), personal (ICT experience, work experience), and organisational (sector) factors related to employees on adopting mobile commerce (m-commerce) and mobile services (m-services). A survey is conducted among employees from government-and private-sector organisations for this purpose, assuming that this group plays an important role in helping to adopt new technologies in societies. Based on this survey, the results indicate that gender, experience, and sector have an impact on attitude towards using m-technologies and that such attitude has a significant effect on the actual use of m-technologies.
Citation Count: 2
A Generic, Cloud-Based Representation for Supply Chains (SC's)
(Igi Global, 2013) Akyuz, Goknur Arzu; Rehan, Mohammad; Information Systems Engineering; Industrial Engineering
As a very recent IT paradigm, Cloud Computing is gaining momentum and receiving more and more interest in literature. With various characteristics such as offering flexibility, cost reductions, platform independence and on-demand service, cloud approach opens up tremendous opportunities from Supply Chain (SC) perspective. However, extant literature reveals that adoption and assimilation of the technology is not mature in SC domain and cloud-based modelling initiatives are only recent. To fill this gap, this study discusses the opportunities of cloud computing from SC perspective and proposes a generic representation based on cloud philosophy. The proposed representation is conceptual, flexible and customizable, utilizing and highlighting the cloud benefits in a multi-partner setting. Therefore, this article is an answer to the research questions: "what are the opportunities of cloud philosophy for SC domain?" and "how can supply chains be represented generically based on cloud technology in multi-actor environment?". Contribution of this study lies in comprehensive treatment of cloud computing and supply chain intersection as well as the generic representation.
Citation Count: 2
A Generic, Multi-Period and Multi-Partner Cost Optimizing Model for Cloud-Based Supply Chain
(Igi Global, 2016) Akyuz, Goknur Arzu; Rehan, Mohammad; Information Systems Engineering; Industrial Engineering
Cloud technology in a multi-enterprise, collaborative context is one of the most promising topics at IT-Supply Chain (SC) intersection. Cloud comes with well-proven advantages and cost savings; enabling collaboration and business intelligence. Cloud transition is still on-going with individual enterprise-level transitions. However, collaborative paradigm dictates that entire network well-being is to be considered over enterprise-level concerns. Thus, handling the transition of a single enterprise is not sufficient for strategic network leverage. Planning and managing across multiple enterprises is required, taking into consideration various cost items and budget constraints. In this study, a multi-period multi-partner cost-optimizing model is developed for network-level management of cloud transition for a SC. The model produces an optimal transition plan, indicating timing of the transition for each partner to obtain the maximum cost savings across network over a specified planning horizon. The model proposed is generic, flexible and customizable for different sectors/settings.
Citation Count: 0
Impact of job requirements on ICT curriculum
(2011) Canturk,M.; Rehan,M.; Computer Engineering; Information Systems Engineering
This study presents an approach to address the issue of keeping curriculum content in synch with the changing demands; in other words dynamic curriculum delivery or dynamic curriculum updating based on a model. In this approach, the analysis of Information and Communication Technology (ICT) job data from the industry, and as well as the ongoing use of expert knowledge from the field of information science keep the ICT curriculum content up-to-date, relevant, and consistent with the educational goals of the universities, and students in a variety of educational and cultural contexts. A number of recommendations are put forward for educating students in Turkish universities in order to enhance their opportunities in the international job market. © 2011 TEMPUS Publications.
Citation Count: 0
Impact of Job Requirements on ICT Curriculum
(Tempus Publications, 2011) Canturk, Mehmet; Rehan, Mohammad; Computer Engineering; Information Systems Engineering
This study presents an approach to address the issue of keeping curriculum content in synch with the changing demands; in other words dynamic curriculum delivery or dynamic curriculum updating based on a model. In this approach, the analysis of Information and Communication Technology (ICT) job data from the industry, and as well as the ongoing use of expert knowledge from the field of information science keep the ICT curriculum content up-to-date, relevant, and consistent with the educational goals of the universities, and students in a variety of educational and cultural contexts. A number of recommendations are put forward for educating students in Turkish universities in order to enhance their opportunities in the international job market.
Citation Count: 16
Online purchase behaviour among professionals: a socio-demographic perspective for Turkey
(Routledge Journals, Taylor & Francis Ltd, 2014) Akman, Ibrahim; Rehan, Mohammad; Information Systems Engineering; Computer Engineering
This study reports the findings of a survey concerning the impact of professionals' selected socio-demographic factors with regard to their online purchasing behaviour in Turkey, since this consumer group plays an important role in adopting new technologies in societies. The survey has been conducted using a 'face-to-face interview' approach during an IT event. To keep in line with the available literature, gender, age, education level, income and daily Internet usage, constitute the socio-demographic variants for this study. Five hypotheses were constructed to investigate the nature of the relationship between the socio-demographic factors and the usage of online purchasing. The chi-square method was selected to test the hypotheses. According to the test results, age, income and education level have a significant impact on the online purchasing behaviour of professionals.
Citation Count: 3
The predictive impact of socio-demographic and behavioural factors on professionals' e-commerce attitudes
(Academic Journals, 2010) Akman, Ibrahim; Rehan, Mohammad; Information Systems Engineering; Computer Engineering
This paper first reviews the e-commerce issues in general and then gives a detailed report of the findings of a survey concerning how sociodemographic (gender and income) and behavioural (computer experience and average daily use of the Internet) factors influence e-commerce attitude of professionals. The survey was conducted among professionals from the government and private sectors. The results indicated that income is significantly related to the usage of e-commerce. Additionally, computer experience and average daily use of the internet were found to be significant in explaining usage reason for e-commerce users whereas the variable income was found to be significant in explaining nonusage reason for e-commerce nonusers.
Citation Count: 6
The predictive impact of socio-demographic and behavioural factors on professionals' e-commerce attitudes
(2010) Akman,I.; Rehan,M.; Information Systems Engineering
This paper first reviews the e-commerce issues in general and then gives a detailed report of the findings of a survey concerning how sociodemographic (gender and income) and behavioural (computer experience and average daily use of the Internet) factors influence e-commerce attitude of professionals. The survey was conducted among professionals from the government and private sectors. The results indicated that income is significantly related to the usage of e-commerce. Additionally, computer experience and average daily use of the internet were found to be significant in explaining usage reason for e-commerce users whereas the variable income was found to be significant in explaining nonusage reason for e-commerce nonusers. © 2010 Academic Journals.
Citation Count: 44
Requirements for forming an 'e-supply chain'
(Taylor & Francis Ltd, 2009) Akyuz, Goknur Arzu; Rehan, Mohammad; Information Systems Engineering; Industrial Engineering
In today's digital economy, web-based integration of the enterprises to form an e-supply chain is a critical weapon for orchestrating the whole supply chain towards competitiveness. This paper intends to discuss the requirements for forming an e-supply chain from different perspectives, such as integration with the legacy systems, timing and prior presence of ERP (enterprise resources planning) systems, BPR (business process re-engineering) needs of internal and external business processes and business intelligence/decision support needs. A look at technical knowledge and structure to construct an e-supply chain is provided. Challenges involved in forming an e-supply chain are also briefly mentioned as a separate section in this paper. During the study, requirements are gathered by making a review of recent literature.
Citation Count: 1
Supply chain in the cloud: Opportunities, barriers, and a generic treatment
(IGI Global, 2015) Akyuz,G.A.; Rehan,M.; Information Systems Engineering; Industrial Engineering
Cloud concept is directly related with the beyond-ERP integrity and collaboration across a number of heterogeneous Supply Chain (SC) partner infrastructures. The technology enables partners to form a collaborative SC community without the burden of significant IT investment. Cloud applications offer significant opportunities from SC perspective, and the assimilation of the Cloud Technology is not complete yet in the Supply Chain domain. It also involves various barriers from implementation perspective, as well as the concerns related with vendor lock-in, security, reliability, privacy and data ownership. This chapter provides a comprehensive coverage of the opportunities and barriers as well as the generic treatment from SC perspective. It also highlights how the cloud technology represents a perfect fit with the ideas of 'Collaborative Supply Chains', 'Business Process Outsourcing' and 'long-term strategic partnerships, which are the key themes characterizing the Supply Chains of today's era. This chapter reveals that the intersection of the topics 'Cloud computing' and 'Supply Chain' is a promising area for further research. Further studies in a multi-partner setting with respect to a variety of configurations, case studies and applications, as well as the security, reliability and data ownership issues are justified. © 2015 by IGI Global. All rights reserved.
Citation Count: 2
Trends in E-Governments: From E-govt to M-govt
(2013) Ertürk,K.L.; Sengul,G.; Rehan,M.; Information Systems Engineering; Computer Engineering
New technological advancement and availability in mobile devices, technology, applications and networks have made it possible for a common citizens to access information and transact services while on the move. This gives an opportunity for governments to provide such services to citizens at the minimum cost. E-government practice and routine in public sectors are being supplemented and moving towards to m-governement (mobile government). M-Government can be defined as the massive usage of mobile devices with their applications to develope a quick connection and response between citizen and public sector authorities. M-government is a support of improving the quality, time saving and usability of e-government applications around the clock from any location. The existing technological foundations, applications and services support the idea that m-government will be a significant part of e-government efforts. The policy makers and IT professionals need get ready to embrace these developments and participate in the ways to enhance e-government activities through m-government. This transformational process is going on around the world. This article will investigate where governmental organizations are becomming mobil government organization to quickely reach to their citizens and increasing communication with them beyound the limits. © IDOSI Publications, 2013.
Türkiye Cumhuriyeti elektronik kamu ihale sistemi için birlikte çalışabilir model önerisi
(2015) İmamoğlu, Meltem Yıldırım; Rehan, Mohammad; Information Systems Engineering
Devletin Gayri Safi Yurtiçi Hasıla (GSYH) 'sının yaklaşık %15 lik kısmı kamu alımları için harcanmaktadır. Bu nedenle kamu ihalelerinde hesap verebilirlik ve şeffaflık çok önemlidir. Kamu harcamalarının düzenlenmesi ve bütçenin etkin kullanımı için sadece kamu ihalelerini değil, kamu ihaleleri için altyapı oluşturan sistemlerin de verimli kullanımı gerekir. Bu nedenle bu tezde elektronik ihale süreçlerinin önemi vurgulanmıştır. Türkiye'de kamu ihalelerinden sorumlu Kamu İhale Kurumu (KİK) ile Devlet Malzeme Ofisi (DMO) olmak üzere Maliye Bakanlığı'na bağlı iki kuruluş mevcuttur. Ancak kamu alımları konusunda, her iki kurum kendi sistemlerine, kendi yasal yükümlülüklerine ve kendi iş süreçlerine sahiptir. İki farklı sistemin olması bir ayrıcalık mıdır? Bu sorunun cevabını bulmak ve her iki sistemin mevcut durumlarını analiz edebilmek için, gerek kamu gerekse tedarikçi tarafını kapsayacak şekilde memnuniyet ölçüm anketleri yapılmıştır. Anketlere ilave olarak, Avrupa Birliği (AB) üye ülkelerindeki ve Türkiye'deki kamu ihaleleri ile ilgili kurum ve kuruluşlarda çalışan yetkili kişiler ile birebir görüşmeler yapılmıştır. Bu görüşmelerde elde edilen bilgiler ışığında, en iyi olan 3 ülke (İngiltere, Almanya ve Danimarka) çalışmada detaylı olarak incelenmiştir. Yapılan çalışmalar sonucunda, AB'de Sayısal Tek Pazar çalışmalarına giderek önem verildiği ve bu nedenle elektronik ihale sistemlerinde daha merkezi yapılara geçildiği görülmüştür. Mevcut durum analizlerine dayanarak, kamu ihalelerindeki Kritik Başarı Faktörleri ve bu başarı faktörlerine ulaşmak için gerekli performans kriterleri belirlenmiştir. Türkiye'nin de bu sürece dahil olabilmesi için, kamu ihalelerinin tek bir platformdan yürütülmesinin kaçınılmaz olduğu gerçektir. Sadece kamu kurumları ile entegre değil, Küçük ve Orta Büyüklükteki İşletmeler (KOBİ) ve tedarikçilerin de katılımına önem veren, şeffaf ve hesap verebilir bir sistem gereklidir. Yapılan bu çalışma, Türkiye Cumhuriyeti Devleti için birlikte çalışabilirlik ve tedarik zinciri yönetimi sistemlerini kapsayan bir elektronik kamu ihale modeli önerisinde bulunulmuştur. Bu çalışmanın tedarik zinciri yönetiminin kamu ihalelerinde kullanımının önemini ortaya çıkartmak ve birlikte çalışabilirlik faydalarını analiz etmek açısından öncü nitelikte olduğu söylenebilir.