Browsing by Author "Christofides, Tasos C."

Article

Analysis of binding parameters of HIV-1 integrase inhibitors: Correlates of drug inhibition and resistance

Loizidou, Eriketi Z.; Zeinalipour-Yazdi, Constantinos D.; Christofides, Tasos C.; Kostrikis, Leontios G. (2009)

This study undertook an exploratory data analysis of the binding parameters of HIV-1 integrase inhibitors. The study group involved inhibitors in preclinical development from the diketo acid, pyrroloquinoline and naphthyridine ...

Article

Analysis of binding parameters of HIV-1 integrase inhibitors: Correlates of drug inhibition and resistance

Loizidou, Eriketi Z.; Zeinalipour-Yazdi, Constantinos D.; Christofides, Tasos C.; Kostrikis, Leontios G. (2009)

This study undertook an exploratory data analysis of the binding parameters of HIV-1 integrase inhibitors. The study group involved inhibitors in preclinical development from the diketo acid, pyrroloquinoline and naphthyridine ...

Article

Analysis of binding parameters of HIV-1 integrase inhibitors: Correlates of drug inhibition and resistance

Loizidou, Eriketi Z.; Zeinalipour-Yazdi, Constantinos D.; Christofides, Tasos C.; Kostrikis, Leondios G. (2009)

This study undertook an exploratory data analysis of the binding parameters of HIV-1 integrase inhibitors. The study group involved inhibitors in preclinical development from the diketo acid, pyrroloquinoline and naphthyridine ...

Article

Autosomal-dominant medullary cystic kidney disease type 1: Clinical and molecular findings in six large Cypriot familiesAAA

Stavrou, Christoforos V.; Koptides, Michael; Tombazos, C.; Psara, E.; Patsias, Charalambos; Zouvani, Ioanna; Kyriacou, Kyriacos C.; Hildebrandt, F.; Christofides, Tasos C.; Pierides, Alkis M.; Constantinou-Deltas, Constantinos D. (2002)

Background. Autosomal-dominant medullary cystic kidney disease (ADMCKD), a hereditary chronic interstitial nephropathy, recently attracted attention because of the cloning or mapping of certain gene loci, namely NPHP1, ...

Article

Bounds for the distance between the distributions of sums of absolutely continuous i.i.d. convex-ordered random variables with applications

Christofides, Tasos C.; Vaggelatou, E. (2009)

Let X 1, X 2, ... and Y 1, Y 2,... be two sequences of absolutely continuous, independent and identically distributed (i.i.d.) random variables with equal means E(X i) = E(Y i), i = 1, 2,.... In this work we provide upper ...

Article

Central limit theorem for dependent multidimensionally indexed random variables

Christofides, Tasos C.; Mavrikiou, P. M. (2003)

We consider dependent multidimensionally indexed random variables whose dependence is determined by the distance of their indices. This provides a generalization of the well-known notion of m-dependence. For the partial ...

Article

The Classical Randomized Response Techniques: Reading Warner (1965) and Greenberg et al. (1969) 50 Years Later

Christofides, Tasos C. (2016)

In surveys of human populations, very often, a major source of nonsampling error is the presence of nonresponse. For various reasons, people refuse to respond. In case the issue under investigation is sensitive or stigmatizing, ...

Article

Comments on a method of comparison of randomized response techniques

Christofides, Tasos C. (2010)

In a forthcoming paper (A unified framework for analysis and comparison of randomized response surveys of binary characteristics, J. Stat. Plan. Infer., doi:10.1016/j.jspi.2008.12.013) Nayak and Adeshiyan (2009) claimed, ...

Article

Conditional acceptability of random variables

Christofides, Tasos C.; Fazekas, I.; Hadjikyriakou, M. (2016)

Acceptable random variables introduced by Giuliano Antonini et al. (J. Math. Anal. Appl. 338:1188-1203, 2008) form a class of dependent random variables that contains negatively dependent random variables as a particular ...

Article

The Conditional Convex Order and a Comparison Inequality

Christofides, Tasos C.; Hadjikyriakou, M. (2015)

In this article, we define the conditional convex order, that is, a stochastic ordering between random variables given a sub-σ-algebra F. For the conditional convex order, we present a few representative results. In addition, ...

Article

Conditional demimartingales and related results

Christofides, Tasos C.; Hadjikyriakou, M. (2013)

In this paper we deal with the classes of F-demimartingales and conditional N-demimartingales and for these new classes of random objects we provide a number of maximal and moment inequalities as well as related asymptotic ...

Article

A connection between supermodular ordering and positive/negative association

Christofides, Tasos C.; Vaggelatou, E. (2004)

In this paper, we show that a vector of positively/negatively associated random variables is larger/smaller than the vector of their independent duplicates with respect to the supermodular order. In that way, we solve an ...

Article

Exponential inequalities for N-demimartingales and negatively associated random variables

Christofides, Tasos C.; Hadjikyriakou, M. (2009)

The class of N-demimartingales generalizes in a natural way the concept of negative association and includes as special cases martingales with respect to the natural choice of σ-algebras. For this class of random variables, ...

Article

A generalized randomized response technique

Christofides, Tasos C. (2003)

To eliminate a major source of bias in surveys of human populations resulting from respondents refusal to cooparate in cases where a question of sensitive nature is involved, the idea of "randomized response" was introduced ...

Book Chapter

Indirect questioning in sample surveys

Chaudhuri, Arijit; Christofides, Tasos C. (Springer-Verlag Berlin Heidelberg, 2013)

Indirect questioning is a crucial topic in surveys of human populations. When the issue is about a stigmatizing characteristic (for example about illegal drug use), standard survey methodologies are destined to fail because, ...

Book

Indirect Questioning in Sample Surveys [electronic book]

Chaudhuri, Arijit; Christofides, Tasos C.

Article

An Intelligent Hybrid Decision Support System for the Management of Water Resources

Kazeli, H.; Keravnou-Papailiou, Elpida T.; Christofides, Tasos C. (2003)

During the last two decades the scarcity of water resources is exponentially growing worldwide. Cyprus is one of the countries in the Mediterranean where the water shortage problem is evident and very severe. This paper ...

Article

Item Count Technique in estimating the proportion of people with a sensitive feature

Chaudhuri, Arijit; Christofides, Tasos C. (2007)

In assessing the prevalence of a sensitive attribute like habitual heroin consumption in a community of people, indirect questioning is a necessity to extract truth on ensuring protection of privacy. The current literature ...

Article

Item count technique with no floor and ceiling effects

Christofides, Tasos C.; Manoli, Eleni (2020)

Conclusions of sample surveys dealing with matters of privacy are often disputed. Many people either refuse to participate or provide false answers. Indirect questioning techniques are designed so that reliable estimates ...

Article

A Kolmogorov inequality for U-statistics based on Bernoulli kernels

Christofides, Tasos C. (1994)

A Kolmogorov inequality for the class of U-statistics based on kernels which are Bernoulli random variables is presented. This class of statistics contains the sample average of i.i.d. Bernoulli random variables as a special ...