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Rehan, Mohammad
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M., Rehan
M.,Rehan
Mohammad, Rehan
Rehan,M.
R.,Mohammad
R., Mohammad
Rehan, Mohammad
M.,Rehan
Mohammad, Rehan
Rehan,M.
R.,Mohammad
R., Mohammad
Rehan, Mohammad
Job Title
Doçent Doktor
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Information Systems Engineering
Status
Former Staff
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Scholarly Output
17
Articles
9
Citation Count
78
Supervised Theses
3
17 results
Scholarly Output Search Results
Now showing 1 - 10 of 17
Doctoral Thesis Türkiye Cumhuriyeti Elektronik Kamu İhale Sistemi için Birlikte Çalışabilir Model Önerisi(2015) İmamoğlu, Meltem Yıldırım; Rehan, Mohammad; Information Systems EngineeringDevletin 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.Article Citation - WoS: 14Citation - Scopus: 18Online Purchase Behaviour Among Professionals: a Socio-Demographic Perspective for Turkey(Routledge Journals, Taylor & Francis Ltd, 2014) Akman, Ibrahim; Rehan, Mohammad; Information Systems Engineering; Computer EngineeringThis 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.Article Citation - WoS: 2A Generic, Cloud-Based Representation for Supply Chains (sc's)(Igi Global, 2013) Akyuz, Goknur Arzu; Rehan, Mohammad; Information Systems Engineering; Industrial EngineeringAs 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.Master Thesis Bilgi Yönetimi Sistemi Üzerinde Bir Durum Çalışması ve Gerçekleştirme Stratejisi(2007) Haspolat, Turgut; Rehan, Mohammad; Information Systems EngineeringGünümüzde 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.Conference Object Citation - Scopus: 2Cost Anaylsis of Interoperable Based E-Procurement System in the Republic of Turkey(Association for Computing Machinery, 2015) Imamoglu,M.Y.; Rehan,M.; Information Systems EngineeringApproximately 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.Book Part Citation - Scopus: 4Evaluation of Turkish Public E-Procurement Systems: an Analysis of Critical Success Factors(IGI Global, 2011) Imamoglu,M.Y.; Rehan,M.; Information Systems EngineeringIn 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.Book Part Citation - Scopus: 1Supply Chain in the Cloud: Opportunities, Barriers, and a Generic Treatment(IGI Global, 2015) Akyuz,G.A.; Rehan,M.; Information Systems Engineering; Industrial EngineeringCloud 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.Article Citation - WoS: 3Citation - Scopus: 6The 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; Information Systems Engineering; Computer EngineeringThis 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.Review Citation - WoS: 7Enterprise 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 EngineeringThe 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.Article Citation - Scopus: 2Trends in E-Governments: From E-Govt To M-Govt(2013) Ertürk,K.L.; Sengul,G.; Rehan,M.; Information Systems Engineering; Computer EngineeringNew 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.
