Search results for "e-procurement"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
143	Mark Beukers, Johan Versendaal, Ronald Batenburg, Sjaak Brinkkemper	The procurement alignment framework construction and application.	Wirtschaftsinf.	2006	DBLP DOI BibTeX RDF	IT/Business Alignment, Case Study Method, Procurement, Maturity, Purchasing
137	Ranzhe Jing, Jianwei Yu	A Case Study on Government Procurement Processes Identifying.	WKDD	2009	DBLP DOI BibTeX RDF
133	Yongjie (Star) Chen, Jeff H. Rankin	A framework for benchmarking e-procurement in the AEC industry.	ICEC	2006	DBLP DOI BibTeX RDF	construction industry, benchmarking, e-procurement
123	Guangshu Chang	The Analysis of Supply Chain Procurement Strategy in E-Commerce.	ISECS	2008	DBLP DOI BibTeX RDF	e-commerce, supply chain, e-procurement
102	Jong Han Park, Jae Kyu Lee, Hoong Chuin Lau	Relationship preserving auction for repeated e-procurement.	ICEC	2008	DBLP DOI BibTeX RDF	supplier relationship, auction, e-procurement
102	Robert J. Kauffman, Hamid Mohtadi	Information Technology in B2B E-procurement: Open vs. Proprietary Systems.	HICSS	2002	DBLP DOI BibTeX RDF	electronic procurement, proprietary systems, risk exposure, technology standards, electronic commerce, uncertainty, supply chain management, open systems, technology adoption, B2B, economic analysis, IT infrastructure
94	Martin Bichler, Hannes Werthner	A Classification Framework of Multidimensional, Multi-Unit Procurement.	DEXA Workshops	2000	DBLP DOI BibTeX RDF	multidimensional multi-unit procurement negotiations, qualitative attributes, competitive source selection, bidding competition, price dimension, homogeneous goods, procurement situations, complex auction mechanisms, buyer, multi-attribute auction mechanisms, multi-unit negotiation situations, Internet, electronic commerce, electronic commerce, information technology, contract, application domains, scoring rule, multi-attribute auctions, classification framework, procurement auctions
92	Michael Klafft, Sarah Spiekermann	Reverse procurement and auctions for consumers.	Wirtschaftsinf.	2006	DBLP DOI BibTeX RDF	Consumer Surplus, Bid Invitations, Procurement, Reverse Auctions
89	Jason L. Dedrick, Sean Xin Xu, Kevin Zhu	Information Technology and the Number of Suppliers in a Supply Chain: Is There a Relationship?	HICSS	2008	DBLP DOI BibTeX RDF	supply chain relationships, number of suppliers, electronic procurement, custom goods, systems integration, transaction costs economics
81	Jörg Dörflinger, Carsten Friedland, Christian Merz, Rudi de Louw	Requirements of a mobile procurement framework for rural South Africa.	Mobility Conference	2009	DBLP DOI BibTeX RDF	mobile procurement, next billion, mobile application, ICT4D
81	Vikram Patankar, Rattikorn Hewett	Automated Negotiations in Web Service Procurement.	ICIW	2008	DBLP DOI BibTeX RDF	Web Service Procurement, Quality of Service, Automated Negotiation
78	Ansgar Mondorf, Maria Wimmer 0001	Interoperability in e-tendering: the case of the virtual company dossier.	ICEGOV	2008	DBLP DOI BibTeX RDF	e-tendering, high impact services, public e-procurement, interoperability, certificates, electronic documents
75	Matthew Cary, Abraham D. Flaxman, Jason D. Hartline, Anna R. Karlin	Auctions for structured procurement.	SODA	2008	DBLP BibTeX RDF
75	Guijun Wang, Stephen Miller	Intelligent Aggregation of Purchase Orders in e-Procurement.	EDOC	2005	DBLP DOI BibTeX RDF
75	Joyce K. Y. Chan, Matthew K. O. Lee	SME E-Procurement Adoption in Hong Kong - The Roles of Power, Trust and Value.	HICSS	2003	DBLP DOI BibTeX RDF
71	Martin Bichler, Alexander Pikovsky, Thomas Setzer	An Analysis of Design Problems in Combinatorial Procurement Auctions.	Bus. Inf. Syst. Eng.	2009	DBLP DOI BibTeX RDF	Multidimensional auction, Industrial procurement, Combinatorial optimization, Combinatorial auction
71	Martin Bichler, Alexander Pikovsky, Thomas Setzer	Kombinatorische Auktionen in der betrieblichen BeschaffungEine Analyse grundlegender Entwurfsprobleme - An Analysis of Design Problems in Combinatorial Procurement Auctions.	Wirtschaftsinf.	2009	DBLP DOI BibTeX RDF	Multidimensional Auction, Combinatorial Optimization, Combinatorial Auction, Procurement
71	Maryam Ashoori, Benjamin Eze, Morad Benyoucef, Liam Peyton	Toward a Framework for Dynamic Service Binding in E-Procurement.	MCETECH	2009	DBLP DOI BibTeX RDF	Service Oriented Architecture Web service, BPEL, Health care, E-Procurement
71	Octavio Martín-Díaz, Antonio Ruiz Cortés, Amador Durán 0001, Carlos Müller	An Approach to Temporal-Aware Procurement of Web Services.	ICSOC	2005	DBLP DOI BibTeX RDF	services, quality, constraint programming, temporality, procurement
71	Marianna Sigala	e-Procurement Use and Adoption Barriers: Evidence from the Greek Foodservice Sector.	ENTER	2005	DBLP DOI BibTeX RDF	foodservice operators, supply chain, adoption, use, e-procurement, benefits
71	Kishor Vaidya, A. S. M. Sajeev, Junbin Gao	E-procurement assimilation: an assessment of e-business capabilities and supplier readiness in the Australian public sector.	ICEC	2005	DBLP DOI BibTeX RDF	e-business capabilities, e-procurement, readiness, assimilation, supplier
65	Tilman Eichstädt	Applying Auction Theory to Procurement Auctions - An Empirical Study Among German Corporations.	Negotiation, Auctions, and Market Engineering	2006	DBLP DOI BibTeX RDF
65	Esther Gal-Or, Mordechai Gal-Or, Anthony J. Dukes	Best Practices for Online Procurement Intermediaries.	HICSS	2005	DBLP DOI BibTeX RDF
65	Reiko Hishiyama, Toru Ishida 0001	Modeling e-Procurement as Co-adaptive Matchmaking with Mutual Relevance Feedback.	PRIMA	2004	DBLP DOI BibTeX RDF
63	Jungwoo Lee 0002, Kang-Tak Oh, Hun Yeong Kwon	Striving for transparency and efficiency in e-government: procurement reform through e-procurement.	ICEGOV	2008	DBLP DOI BibTeX RDF	evolutionary grid, focus group interview, government reform, e-government, efficiency, transparency, procurement
62	Andrew Byde, Michael Yearworth, Kay-Yut Chen, Claudio Bartolini	AutONA: A System for Automated Multiple 1-1 Negotiation.	CEC	2003	DBLP DOI BibTeX RDF
61	Michael Schiessl, Sabrina Duda	A Qualitative Oriented Study About IT Procurement Processes: Comparison of 4 European Countries.	HCI (10)	2007	DBLP DOI BibTeX RDF	International Usability, IT Procurement, Requirement Analysis, User Test, Web Usability
61	Rebecca Angeles	Business-to-business e-procurement corporate initiative: a descriptive empirical study.	ICEC	2006	DBLP DOI BibTeX RDF	business-to-business commerce, supply chain management, value chains, e-procurement, purchasing, interorganizational systems
61	Koutarou Suzuki, Makoto Yokoo	Secure Multi-attribute Procurement Auction.	Financial Cryptography	2005	DBLP DOI BibTeX RDF	security, privacy, Vickrey auction, Procurement auction
61	Koutarou Suzuki, Makoto Yokoo	Secure Multi-attribute Procurement Auction.	WISA	2005	DBLP DOI BibTeX RDF	security, privacy, Vickrey auction, Procurement auction
61	Octavio Martín-Díaz, Antonio Ruiz Cortés, Amador Durán 0001, David Benavides 0001, Miguel Toro	Automating the Procurement of Web Services.	ICSOC	2003	DBLP DOI BibTeX RDF	software procurement, traders, quality-of-service, web services
57	Stefan Klein 0002, Rolf Alexander Teubner	Web-based Procurement New Roles for Intermediaries.	Inf. Syst. Frontiers	2000	DBLP DOI BibTeX RDF	cybermediary, re-, cybermediation, public procurement, electronic procurement, network, hierarchy, market, intermediary, dis-
54	Enrico H. Gerding, Kate Larson, Alex Rogers, Nicholas R. Jennings	Mechanism Design for Task Procurement with Flexible Quality of Service.	SOCASE	2009	DBLP DOI BibTeX RDF
54	Enrico H. Gerding, Alex Rogers, Kate Larson, Nick R. Jennings	Mechanism design for task procurement with flexible quality of service.	AAMAS (2)	2009	DBLP BibTeX RDF
54	Tallichetty S. Chandrashekar, Y. Narahari	The Core and Shapley Value Analysis for Cooperative Formation of Procurement Networks.	CEC/EEE	2007	DBLP DOI BibTeX RDF
54	Jiangming Jia, Zhengxiao Wang, Xiaohong Pan	Simulation-Based Optimization Research on Outsourcing Procurement Cost.	LSMS (1)	2007	DBLP DOI BibTeX RDF
54	Sampath Kameshwaran, Lyès Benyoucef, Xiaolan Xie	Design of Progressive Auctions for Procurement Based on Lagrangian Relaxation.	CEC	2005	DBLP DOI BibTeX RDF
54	Jan A. Elfving, Iris D. Tommelein	Construction engineering and project management II: impact of multitasking and merge bias on procurement of complex equipment.	WSC	2003	DBLP DOI BibTeX RDF
54	Junsheng Long, Siqing Peng, Lihua Chen	Compete with the Retailing Giants for Survival: A Procurement Alliance Approach Enabled by Internet Technology.	Human.Society@Internet 2003	2003	DBLP DOI BibTeX RDF
54	Eva Ponce, Alfonso Durán	Characterization of the Security Implications of Alternative E-procurement Topologies.	ICCSA (3)	2003	DBLP DOI BibTeX RDF
54	E. J. McFaul	Application of remote terminal emulation in the procurement process.	AFIPS National Computer Conference	1977	DBLP DOI BibTeX RDF
52	YunJung Ko	Business Process Modeling of the Photonics Industry Using the UMM.	ICCSA (1)	2007	DBLP DOI BibTeX RDF
50	Simon Fong 0001, Zhuang Yan	Design of a web-based tendering system for e-government procurement.	ICEGOV	2009	DBLP DOI BibTeX RDF	tendering, e-government, procurement, BPR
50	Weijun Zheng, Xiaoqing Wang	An explorative study of industry influences: on vertical e-marketplaces' adoption of e-procurement auction.	Inf. Syst. E Bus. Manag.	2008	DBLP DOI BibTeX RDF	e-procurement auction, Industry contingency, Electronic market
50	Josep M. Marco-Simó, Joan A. Pastor, Rafael Macau	Public Procurement of IS/IT Services: Past Research and Future Challenges.	Open IT-Based Innovation	2008	DBLP DOI BibTeX RDF	Public procurement methods, IS and IT services, outsourcing in public administration
50	Robert R. Hoffman, William C. Elm	HCC Implications for the Procurement Process.	IEEE Intell. Syst.	2006	DBLP DOI BibTeX RDF	procurement process, requirements specification, human-centered computing
50	Pak-Lok Poon, Yuen-Tak Yu	Procurement of enterprise resource planning systems: experiences with some Hong Kong companies.	ICSE	2006	DBLP DOI BibTeX RDF	Hong Kong companies, pre-implementation, case studies, implementation, ERP, adoption, procurement, acquisition
50	John Douglas Thomson	Innovative perspectives: value creation and electronic procurement.	ICEC	2005	DBLP DOI BibTeX RDF	trust, innovation, transparency, procurement, electronic, value creation, transaction costs
50	Octavio Martín-Díaz, Antonio Ruiz Cortés, David Benavides 0001, Amador Durán 0001, Miguel Toro	A Quality-Aware Approach to Web Services Procurement.	TES	2003	DBLP DOI BibTeX RDF	software procurement, quality-of-service, web services
47	Bo Ju, Lifeng Xi, Xiaojun Zhou	New Product Design Based Target Cost Control with BP Neural Network and Genetic Algorithm - A Case Study in Chinese Automobile Industry.	ISICA	2009	DBLP DOI BibTeX RDF	target cost control, Chinese automobile industry, new product design, procurement cost, supplier satisfaction, genetic algorithm, Back Propagation neural network
47	Terence Kelly, Andrew Byde	Generating k-best solutions to auction winner determination problems.	SIGecom Exch.	2006	DBLP DOI BibTeX RDF	decision support, auctions, knapsack problems, procurement, preference elicitation, k-shortest paths
47	Peter Merrick, Patrick Barrow	Testing the predictive ability of a requirements pattern language.	Requir. Eng.	2005	DBLP DOI BibTeX RDF	Requirements patterns, Procurement, Use case modelling
44	Stephan Corvers, Loïc Martínez Normand, Clas Thorén, Enrique Varela, Eric Velleman, Klaus Peter Wegge	Conformity Assessment in the Public Procurement of Accessible ICT.	HCI (5)	2009	DBLP DOI BibTeX RDF
44	Andrew Byde, Terence Kelly, Yunhong Zhou, Robert Endre Tarjan	Efficiently Generating k-Best Solutions to Procurement Auctions.	AAIM	2009	DBLP DOI BibTeX RDF
44	Pooya Farahvash, Tayfur Altiok	Application of multi-dimensional procurement auction in single-period inventory models.	Ann. Oper. Res.	2008	DBLP DOI BibTeX RDF	Multi-dimensional bid, Simulation, Inventory, Multi-attribute decision making, Reverse auction
44	David Ladd	A Software Procurement and Security Primer.	IEEE Secur. Priv.	2006	DBLP DOI BibTeX RDF
44	Carsten Block, Dirk Neumann 0001	A Decision Support System for Choosing Market Mechanisms in e-Procurement.	Negotiation, Auctions, and Market Engineering	2006	DBLP DOI BibTeX RDF
44	Carl Erik Moe, Anne Cathrine Risvand, Maung K. Sein	Limits of Public Procurement: Information Systems Acquisition.	EGOV	2006	DBLP DOI BibTeX RDF
44	Carl Erik Moe	Public e-Procurement - Determinants of Attitudes Towards Adoption.	EGOV	2004	DBLP DOI BibTeX RDF
44	Martin Bichler, Marion Kaukal	Design and Implementation of a Brokerage Service for Electronic Procurement.	DEXA Workshops	1999	DBLP DOI BibTeX RDF
44	Magnus Haglind, Lars Johansson, Martin Rantzer	Experiences Integrating Requirements Engineering and Business Analysis An Empirical Study of Operations & Management System Procurement Projects.	ICRE	1998	DBLP DOI BibTeX RDF
43	Helena Lindskog	SOTIP as a Model for Outsourcing of Telecom Services for the Public Sector.	HICSS	2005	DBLP DOI BibTeX RDF	public procurement, procurement model, telecommunications, outsourcing
43	Keita Kamei, Kenji Tanaka	An Optimization System for Procurement Logistics Including both the Cost of Ground Rent and the Cost of Procurement Logistics.	ICSEng	2011	DBLP DOI BibTeX RDF	Logistics system, Procurement management, Transportation model, Simulation, Optimization
41	Moninder Singh, Jayant Kalagnanam, Sudhir Verma, Amit J. Shah, Swaroop K. Chalasani	Automated cleansing for spend analytics.	CIKM	2005	DBLP DOI BibTeX RDF	commodity mapping, spend analysis, information retrieval, knowledge management, unstructured data
41	Trieu C. Chieu, Florian Pinel, Jih-Shyr Yih	Unified Commerce Server Architecture for Large Number of Enterprise Stores.	CEC	2004	DBLP DOI BibTeX RDF
40	Robert R. Hoffman, Kelly Neville, Jennifer Fowlkes	Using cognitive task analysis to explore issues in the procurement of intelligent decision support systems.	Cogn. Technol. Work.	2009	DBLP DOI BibTeX RDF	Systems development processes, Procurement, Cognitive task analysis
40	Ana Petric, Gordan Jezic	Reputation Tracking Procurement Auctions.	ICCCI	2009	DBLP DOI BibTeX RDF	B2B e-market, reputation, procurement, reverse auctions, multi-attribute auctions
40	Xia Zhanguo, Wang Ke, Wang Zhixiao	Meta-heuristic Enabled MAS Optimization in Supply Chain Procurement.	SNPD	2008	DBLP DOI BibTeX RDF	supply chain procurement, multi-agent, Meta-heuristic, variable neighborhood search
40	Helena Lindskog	KNUT: electronic procurement of telecom services for the public sector.	DG.O	2008	DBLP BibTeX RDF	model for users' requirements, public e-procurement, telecommunications
40	Richard Hodgkinson	Using Public Procurement to Ensure That Accessible ICT Products and Services Are Available for All European Citizens (ETSI HF STF 333).	ICCHP	2008	DBLP DOI BibTeX RDF	public procurement, Mandate M/376, ETSI, CEN, JTC 1, SWG-A, accessibility, Standards, disabilities, elderly, legislation, ISO, Europe, Section 508, IEC
40	Wei Jiang	E-procurement and market evolution: an evolutionary game approach.	ICEC	2005	DBLP DOI BibTeX RDF	market evolution, B2B, evolutionary game theory, e-procurement, e-marketplaces
40	Clas Thorén	The procurement of usable and accessible software.	Univers. Access Inf. Soc.	2004	DBLP DOI BibTeX RDF	Suppliers declarations, Accessibility, E-government, Procurement, Application software
40	Jin Baek Kim, Arie Segev	Multi-component contingent auction (MCCA): a procurement mechanism for dynamic formation of supply networks.	ICEC	2003	DBLP DOI BibTeX RDF	cost dependency, algorithm, combinatorial auction, compatibility, procurement, winner determination
40	Trieu C. Chieu, Shiwa S. Fu, Florian Pinel, Jih-Shyr Yih	Unified solution for procurement integration and B2B stores.	ICEC	2003	DBLP DOI BibTeX RDF	procurement integration, single sign-on and punchout, electronic commerce, business-to-business
40	Judith Gebauer, Michael J. Shaw, Kexin Zhao	The Efficacy of Mobile e-Procurement: A Pilot Study.	HICSS	2003	DBLP DOI BibTeX RDF	Electronic procurement, empirical study, mobile technologies, technology management
40	Patrik Forsgren, Arnis Daugulis	Requirements Engineering In Control Center Procurement Projects Practical Experiences from the Power Industry.	ICRE	1998	DBLP DOI BibTeX RDF	Requirements Engineering (RE), Requirements Specification (RS), Industrial Control and Information Systems, Control Center, SCADA/EMS, Request For Proposal (RFP), Commercial Off-The-Shelf (COTS), Procurement, BMS, Industrial Control Systems
40	Patrik Forsgren, Tomas Rahkonen	Specification of customer and user requirements in industrial control system procurement projects.	RE	1995	DBLP DOI BibTeX RDF	power system control, user requirements specification, customer requirements specification, industrial control system procurement projects, power industries, manufacturing industries, process industries, customer expectations, major users, major vendors, performance, formal specification, costing, functionality, process control, distributed control, software systems, computer systems, user needs, consultants, industrial control, SCADA systems, load management
40	Dominic Welsh, Sergi Batalla Martinez	Framework for usage potential for Digital Procurement in the Construction Industry: Digital Procurement in Construction ProjectsPotential for more transparent and effective procurement of maintenance and installation services in the construction industry.	ICCTA	2023	DBLP DOI BibTeX RDF
40	Nawaf Al Awadhi, Muhammad Alshurideh	The Impact of Procurement Agility and Procurement Sustainability on Organizational Performance in UAE'S Semi-government Entities: The Mediating Role of Procurement Centralization.	AISI	2022	DBLP DOI BibTeX RDF
37	Wayne Zachary, Robert R. Hoffman, Kelly Neville, Jennifer Fowlkes	Human Total Cost of Ownership: The Penny Foolish Principle at Work.	IEEE Intell. Syst.	2007	DBLP DOI BibTeX RDF	R&D cost, human-centered technology, human total cost of ownership, procurement, total cost of ownership
37	Sampath Kameshwaran, Lyès Benyoucef, Xiaolan Xie	Discount auctions for procuring heterogeneous items.	ICEC	2005	DBLP DOI BibTeX RDF	discount auctions, e-commerce, e-procurement
37	Erik Markensten, Henrik Artman	Procuring a usable system using unemployed personas.	NordiCHI	2004	DBLP DOI BibTeX RDF	acquire, interaction architect, design, usability, integration, requirements, personas, procure, procurement, procurer, business
34	Tvrtko Milicic, Vedran Podobnik, Ana Petric, Gordan Jezic	The CrocodileAgent: A Software Agent for SCM Procurement Gaming.	IEA/AIE	2008	DBLP DOI BibTeX RDF
34	Dongjoo Lee, Seungseok Kang, Sangkeun Lee 0001, Young-gon Kim, Sang-goo Lee	BestChoice SRM: a simple and practical supplier relationship management system for e-procurement.	DEECS	2007	DBLP DOI BibTeX RDF	supplier evaluation, supplier relationship management
34	Raghav Kumar Gautam, N. Hemachandra 0001, Y. Narahari, V. Hastagiri Prakash	Optimal Auctions for Multi-Unit Procurement with Volume Discount Bids.	CEC/EEE	2007	DBLP DOI BibTeX RDF
34	Jaspreet Singh Pahwa, Pete Burnap, W. A. Gray, John C. Miles	MDSSF - A Federated Architecture for Product Procurement.	DEXA	2006	DBLP DOI BibTeX RDF
34	Diane Jamieson, Kevin Vinsen, Guy Callender	Agile Procurement and Dynamic Value for Money to Facilitate Agile Software Projects.	EUROMICRO-SEAA	2006	DBLP DOI BibTeX RDF
34	Sven Döring, Stefan Fischer 0003, Werner Kießling, Timotheus Preisinger	Optimizing the Catalog Search Process for E-Procurement Platforms.	DEEC	2005	DBLP DOI BibTeX RDF
34	Tommaso Federici	An Integrated Approach in Healthcare e-Procurement: The Case-Study of the ASL of Viterbo.	TCGOV	2005	DBLP DOI BibTeX RDF
34	Diane Jamieson, Kevin Vinsen, Guy Callender	Agile Procurement: New Acquisition Approach to Agile Software Development.	EUROMICRO-SEAA	2005	DBLP DOI BibTeX RDF
34	Michael Schwind	Design of Combinatorial Auctions for Allocation and Procurement Processes.	CEC	2005	DBLP DOI BibTeX RDF
34	Christopher Kiekintveld, Michael P. Wellman, Satinder Singh 0001, Vishal Soni	Value-driven procurement in the TAC supply chain game.	SIGecom Exch.	2004	DBLP DOI BibTeX RDF	algorithms, e-commerce, economics, supply chains, trading agents
34	Eva Ponce, Alfonso Durán, Teresa Sánchez	Security Consequences of Messaging Hubs in Many-to-Many E-procurement Solutions.	ICCSA (1)	2004	DBLP DOI BibTeX RDF
34	S. Kameshwaran, Y. Narahari	e-Procurement Using Goal Programming.	EC-Web	2003	DBLP DOI BibTeX RDF
34	Younes Benslimane, Michel Plaisent, Prosper Bernard	Applying the Task-Technology Fit Model to WWW-based Procurement: Conceptualization and Measurement.	HICSS	2003	DBLP DOI BibTeX RDF
31	Michael Benisch, Alberto Sardinha, James Andrews, Norman M. Sadeh	CMieux: adaptive strategies for competitive supply chain trading.	ICEC	2006	DBLP DOI BibTeX RDF	multi-agent systems, supply chain management, trading agents, TAC SCM
31	Raghu Arunachalam, Norman M. Sadeh	The 2003 Supply Chain Management Trading Agent Competition.	ICEC	2004	DBLP DOI BibTeX RDF
31	Juan Pablo Carvallo 0001, Xavier Franch, Carme Quer	Defining a Quality Model for Mail Servers.	ICCBSS	2003	DBLP DOI BibTeX RDF
31	Uzay Kaymak, Jean Paul Verkade, Hubert A. B. te Braake	A Heuristic Lotting Method for Electronic Reverse Auctions.	ISCIS	2003	DBLP DOI BibTeX RDF
30	Milos Milovanovic, Marija Bogicevic, Miroslav Lazovic, Dejan B. Simic, Dusan Starcevic	Choosing Authentication Techniques in E-procurement System in Serbia.	ARES	2010	DBLP DOI BibTeX RDF	Security, Authentication, e- Government, e-Procurement, public services