Browsing by Author "Gortzis, L G"
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- ItemDesigning and redesigning medical telecare services: a forces-oriented model.(2007-01-16) Gortzis, L GMedical telecare services designing and redesigning still remains a challenging issue since it often depends on how a number of socio technological issues are framed This work has two key objectives the former is to theoretically analyze the nature of a telecare environment by developing a model that reveals potential areas of analysis and the latter is to support designing and redesigning medical telecare services by formulating a strategy as well as a number of state of the art guidelines
- ItemEstimating the success of e-health collaborative services: the THEMIS framework.(2011-02-14) Gortzis, L GThis study proposes a prototype framework THEMIS for estimating algebraically the success S of the electronic health collaborative services e HCS and examines two hypotheses first that the S estimation of an e HCS developed by a third party vendor demands a shrunk formative model and second that causal relationships between the involved dimensions FFP CO COSTS do exist and their parameters affect the S from weakly to strongly and vice versa A formative model was shrunk to generate three causal dimensions Collaborators Objections Costs Fitness for Purpose Then the new framework THEMIS was enriched with a causal loop diagram a prototype scoring method termed polarisation method and 42 questions In order to investigate the feasibility of the THEMIS framework we estimated the S of 15 e HCSs and the algebraic outcomes E S were compared one by one with usage categories produced by a commercial software Our findings supported the initial hypotheses The S was estimated with accuracy for the e HCSs with a weak E S the commercial software verified that they remained idle several times during the 11 month evaluation period whereas the e HCS with a strong E S the commercial software verified that they were used frequently Frameworks such as the one proposed which are based on both qualitative and quantitative methods may provide significant support on the S estimation field
- ItemPortable biomedical devices: a critical issue during telecare services design.(2008-07-08) Gortzis, L G; Bakettas, I; Makropoulos, C; Graschew, G; Nikiforidis, GThe selection of a portable biomedical device PBD is a key issue regarding telecare service design The objective of this study is to investigate the accuracy parameters of a PBD under different settings and levels
- ItemTracing and cataloguing knowledge in an e-health cardiology environment.(2008-03-10) Gortzis, L G; Nikiforidis, GIn an e health cardiology environment the current knowledge engineering systems can support two knowledge processes the knowledge tracing and the knowledge cataloguing We have developed an n tier system capable of supporting these processes by enabling human collaboration in each phase along with a prototype scalable knowledge engineering tactic A knowledge graph is used as a dynamic information structure Biosignal data values of HR QRS and ST variables from 86 patients were used two general practitioners defined and updated the patients clinical management protocols and feedback was inserted retrospectively Several calibration tests were also performed The system succeeded in formulating three knowledge catalogues per patient namely the patient in life the patient in time and the patient in action For each patient the clinically accepted normal limits of each variable were predicted with an accuracy of approximately 95 The patients risk levels were identified accurately and in turn the errors were reduced The data and the expert oriented feedback were also time stamped correctly and synchronized under a common time framework Knowledge processes optimization necessitates human collaboration and scalable knowledge engineering tactics Experts should be responsible for resenting or rejecting a process if it downgrades the provided healthcare quality