A multidatabase infrastructure over CORBA

Kılıç, Ebru


A Blockchain-Based Decentralized Security Architecture for IoT
Angın, Pelin; METE, Okan; RAMAZANLİ, Azer; SARİCA, Kaan; Güngören, Bora (2018-06-30)
Advances in the Internet of Things (IoT) computing paradigm have made it a popular solution covering many areas such as smart cities, connected vehicles, smart farming etc. to provide major economic benefits, reduced resource consumption, smarter environments and increased sharing of resources among other advantages. However, the security issues arising from the scale of connectivity and heterogeneity of resources in IoT make it a hot target for attackers, where centralized security solutions fall short. Th...
A PUF-based lightweight group authentication and key distribution protocol
Yıldız, Hüsnü; Onur, Ertan; Department of Computer Engineering (2020-9)
Securing Internet of Things (IoT) applications that collect and transport sensitive data by guaranteeing authenticity, integrity, and confidentiality is a critical challenge. Reducing computation and communication overhead of security functions is also a key concern since a large number of constrained devices may take place in such applications. Our main focus in this thesis is group authentication and key management in IoT. The existing group authentication and key management protocols in the literature pe...
A hierarchical object localization and image retrieval framework
Uysal, Mutlu; Yarman Vural, Fatoş Tunay; Department of Computer Engineering (2006)
This thesis proposes an object localization and image retrieval framework, which trains a discriminative feature set for each object class. For this purpose, a hierarchical learning architecture, together with a Neighborhood Tree is introduced for object labeling. Initially, a large variety of features are extracted from the regions of the pre-segmented images. These features are, then, fed to the training module, which selects the "best set of representative features", suppressing relatively less important...
A Reduced complexity hybrid precoding architecture and user grouping algorithms for downlink wideband massive MIMO channels
Kilcioğlu, Emre; Güvensen, Gökhan Muzaffer; Department of Electrical and Electronics Engineering (2019)
In this thesis, an efficient hybrid precoding architecture is proposed for single-carrier (SC) downlink wideband spatially correlated massive multiple-input multiple-output (MIMO) channels. The design of two-stage beamformers is realized by using a virtual sectorization via second-order channel statistics based user grouping. The novel feature of the proposed architecture is that the effect of both inter-group-interference (due to non-orthogonality of virtual angular sectors) and the inter-symbol-interferen...
A Secure Semantic Interoperability Infrastructure for Inter-Enterprise Sharing of Electronic Healthcare Records
Boniface, Mike; Watkins, E. Rowland; Saleh, Ahmed; Doğaç, Asuman; Eichelberg, Marco (2006-06-09)
Healthcare professionals need access to accurate and complete healthcare records for effective assessment, diagnosis and treatment of patients. The non-interoperability of healthcare information systems means that inter-enterprise access to a patient's history over many distributed encounters is difficult to achieve. The ARTEMIS project has developed a secure semantic web service infrastructure for the interoperability of healthcare information systems. Healthcare professionals share services and medical in...
Citation Formats
E. Kılıç, “A multidatabase infrastructure over CORBA,” Middle East Technical University, 1996.