Browsing Articles by Title

Now showing items 1-20 of 131

  • Abstract data type support in prolog and its relatio to parallelism 

    Karali, Isambo; Halatsis, Constantin (ACM, 1994)
    Abstract Data Type (ADT) support extends the variety of a system's types and facilitates code development, specification and verification. Moreover, when supported in a parallel environment, parallelism can be more easily ...

  • Accumulator-based built-in self-test generator for robustly detectable sequential fault testing 

    Voyiatzis, Ioannis; Kranitis, N.; Gizopoulos, D.; Paschalis, A.; Halatsis, Constantin (Institution of Engineering and Technology (IET, 2004)
    In this paper an algorithm for the generation of single input change (SIC) pairs is presented, termed the accumulator-based SIC pair generation (ASG) algorithm; SIC pairs have been effectively utilised for testing robustly ...

  • Accurate Image Retrieval Based on Compact Composite Descriptors and Relevance Feedback Information 

    Chatzichristofis, Savvas A.; Zagoris, Konstantinos; Boutalis, Yiannis S.; Papamarkos, Nikos (World Scientific Publishing Company, 2010)
    In this paper a new set of descriptors appropriate for image indexing and retrieval is proposed. The proposed descriptors address the tremendously increased need for e±cient content-based image retrieval (CBIR) in many ...

  • Analysis of a Modified Model for Synchronous Multiprocessor Systems 

    Halatsis, Constantin; Pombortsis, A. (Elsevier Inc., 1986-11)
    The paper presents an analysis of a modified model for synchronous multiprocessor systems. In this model, besides the shared memory modules, each processor has a private memory. The memory references of each processor are ...

  • Analysis of block-organized buffers for Poisson input and periodic block output 

    Halatsis, Constantin; Maritsas, D.; Philokyprou, G. (Taylor & Francis, Ltd., 2007-03-08)
    The statistical behaviour of the block-organized buffers is studied under Poisson input and periodic block output. Analytical expressions concerning mean information loss, channel utilization and expected queueing delay ...

  • An Analysis of the Handover Latency Components in Mobile IPv6 

    Vassiliou, Vasos; Zinonos, Zinon (IEEE, 2009)
    This article analyses the latency components in Mobile IPv6 handovers. It provides real-implementation results for significant parts of the handover process through measurements in a real MIPv6 implementation on a wireless ...

  • Automatic summarization and annotation of videos with lack of metadata information 

    Papadopoulos, Dim P.; Kalogeiton, Vicky S.; Chatzichristofis, Savvas A.; Papamarkos, Nikos (Elsevier, 2013)
    The advances in computer and network infrastructure together with the fast evolution of multimedia data has resulted in the growth of attention to the digital video’s development. The scientific community has increased the ...

  • Behaviour of circuit-switched multistage networks in presence of memory hot spot 

    Halatsis, Constantin (IEEE, 1989)
    Addresses the important problem of evaluating the performance of tightly coupled multiprocessor systems under memory hot spot traffic by presenting an interference analysis of multistage interconnection networks (MINs) for ...

  • C-Testable Modified-Booth Multipliers 

    Gizopoulos, Dimitris; Nikolos, Dimitris; Paschalis, Antonis; Halatsis, Constantin (Springer, 1996)
    In this paper the testability of modified-Booth array multipliers for standard cells based design environments is examined for first time. In such cases the structure of the cells may be unknown, thus Cell Fault Model (CFM) ...

  • Capturing the historical research methodology: an experimental approach 

    Torou, Elena; Katifori, Akrivi; Vassilakis, Costas; Lepouras, Georgios; Halatsis, Constantin (International Conference of Education, Research and Innovation, 2009)
    This paper presents the results of a study on how historians conduct research in a historical archive, and the methodologies they use while searching. Historic research involves finding, using, interpreting and correlating ...

  • Co.Vi.Wo.: Color Visual Words Based on Non-Predefined Size Codebooks 

    Chatzichristofis, Savvas A.; Iakovidou, Chryssanthi; Boutalis, Yiannis; Marques, Oge (IEEE, 2012)
    Due to the rapid development of information technology and the continuously increasing number of available multimedia data, the task of retrieving information based on visual content has become a popular subject of scientific ...

  • CoMo: A Compact Composite Moment-Based Descriptor for Image Retrieval 

    Vassou, Sotiris A.; Anagnostopoulos, Nektarios; Amanatiadis, Angelos; Christodoulou, Klitos; Chatzichristofis, Savvas A. (ACM, 2017-06-19)
    Low level features play a vital role in image retrieval. Image moments can effectively represent global information of image content while being invariant under translation, rotation, and scaling. This paper briefly presents ...

  • CoMo: a scale and rotation invariant compact composite moment-based descriptor for image retrieval 

    Vassou, S. A.; Anagnostopoulos, N.; Amanatiadis, A.; Chatzichristofis, Savvas A.; Christodoulou, Klitos (Springer International Publishing, 2018-03-01)
    Low level features play a significant role in image retrieval. Image moments can effectively represent global information of image content while being invariant under translation, rotation, and scaling. This paper presents ...

  • A Concurrent Built-In Self-Test Architecture Based on a Self-Testing RAM 

    Voyiatzis, Ioannis; Paschalis, Antonis; Gizopoulos, Dimitris; Kranitis, Nektarios; Halatsis, Constantin (IEEE, 2005)
    Manufacturing test is carried-out once to ensure the correct operation of the circuit under test right after fabrication, while testing is carried-out periodically to ensure that the circuit under test continues to operate ...

  • Concurrently totally self-checking microprogram control unit with duplication of microprogram sequencer 

    Paschalis, A. M.; Halatsis, Constantin; Philokyprou, G. (Elsevier Inc., 1987-05)
    This paper presents a new design method for concurrently Totally Self-Checking Microprogram Control Units of bit-slice microprocessors. We consider a fault model that includes arbitrary failures in a single IC package and ...

  • Content based radiology image retrieval using a fuzzy rule based scalable composite descriptor 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis S. (2010)
    The rapid advances made in the field of radiology, the increased frequency in which oncological diseases appear, as well as the demand for regular medical checks, led to the creation of a large database of radiology ...

  • Content-based image retrieval over IEEE 802.11b noisy wireless networks 

    Chatzistavros, Evaggelos; Chatzichristofis, Savvas A.; Zagoris, Konstatinos; Stamatelos, George (Wiley, 2014)
    Mobile devices such as smartphones and tablets are widely used in everyday life to perform a variety of operations, such as e-mail exchange, connection to social media, bank/financial transactions, and so on. Moreover, ...

  • Context and Adaptivity-Driven Visualization Method Selection 

    Golemati, Maria; Vassilakis, Costas; Katifori, Akrivi; Lepouras, George; Halatsis, Constantin (IGI Global, 2009)
    Novel and intelligent visualization methods are being developed in order to accommodate user searching and browsing tasks, including new and advanced functionalities. Besides, research in the field of user modeling is ...

  • Controlling the Handoff Procedure in an Oil Refinery Environment Using Fuzzy Logic 

    Zinonos, Zinon; Chrysostomou, Chrysostomos; Vassiliou, Vasos (IEEE, 2012)
    Mobility is one of the most important challenges in a wireless sensor system. Usually, continuous connectivity of a Mobile Node (MN) is achieved by supporting handoff from one connection point to another. In order to ...

  • Counting Properties of the Switch-Tail Shift-registers 

    Halatsis, Constantin; Sigala, M. (1978-10)
    The properties of the switch-tailed shift registers as counters are examined. It is shown that the Hamming distance between two success ive states in a cycle i~ constant and equal to an odd number. An tI-bit switch-tailed ...