Browsing by Author "Christofides, Tasos C."
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Article
Maximal and moment inequalities for demimartingales and Ndemimartingales
Christofides, Tasos C.; Hadjikyriakou, M. (2012)Newman and Wright (1982) provide an upcrossing inequality for demimartingales while Prakasa Rao (2011) provides a downcrossing inequality for the class of Ndemimartingales. These results are instrumental for obtaining ...

Article
Maximal inequalities and convergence results for generalized Ustatistics
Christofides, Tasos C.; Serfling, R. J. (1990)We present some key probability inequalities and convergence results for multisample, or 'generalized' Ustatistics. The reverse martingale structure of generalized Ustatistic is exploited to obtain a useful Kolmogorovtype ...

Article
Maximal inequalities for demimartingales and a strong law of large numbers
Christofides, Tasos C. (2000)Chow's maximal inequality for (sub)martingales is extended to the case of demi(sub)martingales introduced by Newman and Wright (Z. Wahrsch. Verw. Geb. 59 (1982) 361371). This result serves as a "source" inequality for ...

Article
Mixture of Truthful–Untruthful Responses in Public Surveys
Christofides, Tasos C.; Perri, Pier Francesco (2019)When sensitive issues are surveyed, collecting truthful data and obtaining reliable estimates of population parameters is a persistent problem in many fields of applied research mostly in sociological, economic, demographic, ...

Article
The MTHFR 677TT and 677CT/1298AC genotypes in Cypriot patients may be predisposing to hypertensive nephrosclerosis and chronic renal failure
Koupepidou, P.; ConstantinouDeltas, Constantinos D.; Christofides, Tasos C.; Athanasiou, Yiannis; Zouvani, Ioanna; Pierides, Alkis M. (2005)Aim. The homozygous 677TT mutation of the MTHFR gene has been linked to deep vein thrombosis and to arterial atherosclerotic events of the coronary, carotid and peripheral arteries. Its putative association with renal ...

Article
The MTHFR 677TT and 677CT/1298AC genotypes in Cypriot patients may be predisposing to hypertensive nephrosclerosis and chronic renal failureAAA
Koupepidou, P.; ConstantinouDeltas, Constantinos D.; Christofides, Tasos C.; Athanasiou, Yiannis; Zouvani, Ioanna; Pierides, Alkis M. (2005)Aim. The homozygous 677TT mutation of the MTHFR gene has been linked to deep vein thrombosis and to arterial atherosclerotic events of the coronary, carotid and peripheral arteries. Its putative association with renal ...

Article
A new version of the item count technique
Christofides, Tasos C. (2015)Traditional survey techniques on human populations are expected to give poor results when the issue under investigation is sensitive or stigmatizing. Various sources of nonsampling error, in particular nonresponse and ...

Article
Outcome of kidney transplantation in autosomal dominant medullary cystic kidney disease type 1
Stavrou, Christoforos V.; ConstantinouDeltas, Constantinos D.; Christofides, Tasos C.; Pierides, Alkis M. (2003)Background. Autosomal dominant medullary cystic kidney disease (ADMCKD) is an inherited, distinct, chronic, tubulointerstitial, cystictype nephropathy, often described together with juvenile nephronophthisis as a single ...

Article
Preface
Chaudhuri, Arijit; Christofides, Tasos C.; Rao, C. R. (2016)

Article
Probability inequalities with exponential bounds for Ustatistics
Christofides, Tasos C. (1991)I present some probability inequalities with exponential bounds for Ustatistics. In particular, I develop a probability inequality for Ustatistics based on kernels which are Bernoulli random variables. In the special ...

Article
Protection of privacy in efficient application of randomized response techniques
Chaudhuri, Arijit; Christofides, Tasos C.; Saha, A. (2009)In estimating the proportion of people bearing a sensitive attribute A, say, in a given community, following Warner's (J Am Stat Assoc 60:6369, 1965) pioneering work, certain randomized response (RR) techniques are available ...

Conference Object
Radio propagation in industrial wireless sensor network environments: From testbed to simulation evaluation
Zinonos, Z.; Vassiliou, Vasos; Christofides, Tasos C. (2012)In recent years, sensor networks characteristics have led to incremental utilization in different types of applications. Several techniques have been proposed to evaluate the performance of WSNs

Article
Randomized response in stratified sampling
Christofides, Tasos C. (2005)This paper extends the randomized response model presented in Christofides (Metrika 57 (2003)195) to the case of stratified sampling. A comparison between the application of the technique in stratified and simple random ...

Article
Randomized response technique for two sensitive characteristics at the same time
Christofides, Tasos C. (2005)In this paper we present a randomized response technique which can be used to estimate the proportion of individuals having two sensitive characteristics at the same time. The information obtained from this procedure can ...

Article
Rate of convergence in the strong law of large numbers for a class of ustatistics and von Mises statistics
Christofides, Tasos C. (1997)For the class of Ustatistics based on multidimensionally indexed random variables introduced in Christofides (1987), an improved rate of convergence in the strong law of large numbers is obtained using martingale inequalities ...

Article
Rate of convergence in the strong law of large numbers for Ustatistics based on a multidimensionally indexed array of random variables
Christofides, Tasos C. (1990)Ustatistics based on a multidimensionally indexed array of random variables were introduced in Christofides (1987). In this paper, the rate of convergence in the strong law of large numbers for this class of Ustatistics ...

Article
A strong law of large numbers for Ustatistics
Christofides, Tasos C. (1992)A Ustatistic is defined based on a symmetric kernel h and on a collection of rdimensionally indexed independent random variables from a distribution F. The simplest case of such a Ustatistic is the sample mean of an ...

Article
Ustatistics on a lattice of I.I.D. random variables
Christofides, Tasos C.; Serfling, R. (1998)Partial sums and sample means of rdimensionally indexed arrays of independent random variables have been studied by Dunford (1951), Zygmund (1951), Kuelbs (1968), Wichura (1969), Smythe (1973), Gut (1978, 1992), Etemadi ...

Article
Ustatistics on associated random variables
Christofides, Tasos C. (2004)We consider the class of Ustatistics which are based on a collection of associated random variables. Since independent random variables are associated, the class of Ustatistics introduced by Hoeffding (Ann. Math. Statist. ...

Book Chapter
Water management in Cyprus through a decisionsupport system
Kazeli, H.; Christofides, Tasos C.; KeravnouPapailiou, Elpida T. (Edward Elgar Publishing, 2003)