Browsing by Title

Now showing items 476-495 of 4904

  • Hybrid Cellular Ants for Clustering Problems 

    Bitsakidis, Nikolaos P.; Chatzichristofis, Savvas A.; Sirakoulis, Georgios Ch. (Old City Publishing, 2014)
    In the last decade the amount of the stored data related to almost all areas of life has rapidly increased. However, the overall process of discovering knowledge from data demands more powerful clustering techniques to ...

  • Hybrid scheme for fast and accurate image retrieval based on color descriptors 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis (ACTA Press, Canada, 2007)
    This paper proposes a new image retrieval system, thatuses only color features and it's based on a hybrid scheme which combines crisp and fuzzy techniques, in order to retrieve color based similar images. The system ...

  • Hypertension: empirical evidence and implications in 2014 

    Makridakis, Spyros; DiNicolantonio, James J. (Open Heart, 2014-05-28)
    High blood pressure (HBP) or hypertension (HTN) is one of the leading causes of cardiovascular (CV) morbidity and mortality throughout the world. Despite this fact, there is widespread agreement that the treatment of HBP, ...

  • Identification and Retrieval of DNA Genomes Using Binary Image Representations Produced by Cellular Automata 

    Konstantinidis, K.; Amanatiadis, A.; Chatzichristofis, Savvas A.; Sandaltzopoulos, R.; Sirakoulis, G. Ch. (IEEE (Computer Society), 2014)
    We have developed a novel method for the identification and retrieval of DNA sequences which are represented as binary images. This type of representation emanates from the evolution of one-dimensional nucleotide arrays ...

  • If we cannot forecast how can we plan? 

    Makridakis, Spyros (Elsevier, 1981)
    The purpose of this article is to deal directly and explicitly with the issues and problems currently facing forecasting, planning and strategy and to discuss how the challenges of the 1980s can be realistically and ...

  • Il rispetto del valore dell' uomo come limite e regola di giudizio della sperimentazione biomedica. L ' esperienza constituzionale greca 

    Manitakis, Antonis (Società Editrice il Mulino, 1997)
    Il tema dei rapportl Intercorrenti tra sperimentazione bioetica e diritti umani non ha suscitato particolari dibattiti nell' ordinamento giuridico greco. li motivo di questo limitato jnteresse risiede nel fatto che, da uh ...

  • Image classification by addition of spatial information based on histograms of orthogonal vectors 

    Zafar, Bushra; Ashraf, Rehan; Ali, Nouman; Ahmed, Mudassar; Jabbar, Sohail; Chatzichristofis, Savvas A. (PLOS ONE, 2018-06-08)
    The Bag-of-Visual-Words (BoVW) model is widely used for image classification, object recognition and image retrieval problems. In BoVW model, the local features are quantized and 2-D image space is represented in the form ...

  • Image Encryption using the Recursive Attributes of the eXclusive-OR Filter 

    Chatzichristofis, Savvas A.; Marques, Oge; Lux, Mathias; Boutalis, Yiannis (Springer, 2014)
    This paper describes a visual multimedia content encryption approach based on cellular automata (CA), expanding the work proposed in [4]. The presented algorithm relies on an attribute of the eXclusive-OR (XOR) filter, ...

  • Image Encryption Using the Recursive Attributes of the eXclusive-OR Filter on Cellular Automata 

    Chatzichristofis, Savvas A.; Marques, Oge; Mathias, Lux; Boutalis, Yiannis (Springer-Verlag, 2012)
    A novel visual multimedia content encryption method based on cellular automata (CA) is presented in this paper. The proposed algorithm is based on an attribute of the eXclusive-OR (XOR) logic gate, according to which, ...

  • Image Moment Invariants as Local Features for Content Based Image Retrieval using the Bag-of-Visual-Words Model 

    Karakasis, Evangelos G.; Amanatiadis, Angelos; Gasteratos, Antonios; Chatzichristofis, Savvas A. (Elsevier, 2015)
    This paper presents an image retrieval framework that uses affine image moment invariants as descriptors of local image areas. Detailed feature vectors are generated by feeding the produced moments into a Bag-of-Visual-Words ...

  • Images of domestic suburbia in greek films of the 50's and 60's 

    Dova, Evanthia; Tentokali, Vana (Dakam, 2017-03)
    The paper is an attempt to approach the imaginary dimension of ‘making a home’ in the urban periphery; in sites that are still under construction, in places whose character is still undefined and fleeting. ‘Making a home’ ...

  • img(Anaktisi): A Web Content Based Image Retrieval System 

    Zagoris, Konstantinos; Chatzichristofis, Savvas A. (IEEE, 2009)
    img(Anaktisi) is a C#/.NET content base image retrieval application suitable for the web. It provides efficient retrieval services for various image databases using as a query a sample image, an image sketched by the ...

  • Img(Rummager): An Interactive Content Based Image Retrieval System 

    Chatzichristofis, Savvas A.; Boutalis, Yiannis; Lux, Mathias (IEEE (Institute of Electrical and Electronics Engineers , United States), 2009)
    This paper presents an image retrieval suite called img(Rummager) which brings into effect a number of new as well as state of the art descriptors. The application can execute an image search based on a query image, either ...

  • The impact of economic crises on the development of innovation and entrepreneurship 

    Karantza, Panagiota (Business Administration Programm, School of Economic Sciences and Business, Neapolis University Pafos, 2017)
    Economists are describing crises affect in numbers how crises has affected counties all over the world, but how do companies are finding solutions to overcome crises when financial resources are less available and does ...

  • The Impact of Emotional Intelligence in the Banking Sector 

    Georgoudes, Michael (Business Administration Program, School of Economics Sciences and Business, Neapolis University Paphos, 2012)
    Emotional Intelligence (El) is arguably one of the most passionately debated constructs in the field of social sciences. Yet to date, there has been a very little consensus on what it is, what it measures and its unique ...

  • The Impact of Empirical Accuracy Studies On Time Series Analysis and Forecasting 

    Fildes, Robert; Makridakis, Spyros (International Statistical Institute (ISI), 1995-12)
    This paper examines a major area of statistics: the application of time series analysis to forecasting, particularly as it applies to the areas of business and economics. This area is unusual in the social sciences in that ...

  • The impact of interpersonal trust and power on the attributes of knowledge acquisition: What is their predictive power? 

    Politis, John D. (MCIL Publishing, Oxford University, 2003-09)
    Little is known on the combined effect of interpersonal trust and power factors on the traits and skills of knowledge acquisition. A survey of 140 first line managers was conducted to investigate the relationship between ...

  • The Impact of Leadership and Power on Perceptions of Creativity in the Workplace 

    Politis, John D. (ACL, Academic Conferences Ltd, 2006)
    The objective of this paper is to empirically investigate the impact of leadership and power on perceptions of creativity in the workplace. The paper also investigates the level of prediction on perceptions of creativity ...

  • The Impact of Organisational Bureaucracy ori the Determinants of Knowledge Acquisition 

    Politis, John D. (ACL, Academic Conferences Ltd, 2006)
    The objective of this paper is to empirically investigate through an industry survey, the impact of organisational bureaucracy on the determinants of knowledge acquisition. The results show that a pyramidical structure has ...

  • The impact of park trees on microclimate in urban areas 

    Georgi, Neratzia Julia; Zafiriadis, K. (Springer Verlag, 2006)
    Trees in cities have an important positive effect on people’s lives. One such positive effect is the amelioration of microclimate. The aim of this research is to assess the correlation between parameters that affect the ...