In the series of papers [1-3,5,6,8,9,11,12] (papers [11] and [12] were written joint­ ly with V. Dupac), Hajek systematically investigated the asymptotic properties of linear rank statistics under null hypotheses, under local (contiguous) and some non­ local alternatives. Besides that , in [4] he derived the rank test of independence in a bivariate distribution, locally most powerful against sp...

This paper analyzes frequency-hopping (FH) and time-hopping (TH) as multiple access format for ultrawideband communications. We apply the concept of fourthegy, recently introduced by Subramanian and Hajek, to both TH and FH.We find that the design rules are different for FCCcompliant systems(where the power spectral density is limited)than for conventional systems(where the energy per bit is li...

We study Bayesian inference for the population total in probability-proportional-to-size (PPS) sampling. The sizes of non-sampled units are not required for the usual Horvitz-Thompson or Hajek estimates, and this information is rarely included in public use data files. Zheng and Little (2003) showed that including the non-sampled sizes as predictors in a spline model can result in improved poin...

A transshipment problem with demands that exceed network capacity can be solved by sending ow in several waves. How can this be done in the minimum number of waves? This is the question tackled in the quickest transshipment problem. Hoppe and Tardos 10] describe the only known polynomial time algorithm to solve this problem. Their algorithm repeatedly minimizes submodular functions using the el...

This paper evaluates the effect of alcohol access on drug-related crime using detailed information on county and state level changes in access laws in Texas between 1978 and 1996. After controlling for both county and year fixed effects, we find evidence that allowing local alcohol access decreases crimes associated with illicit drugs. We also find that prohibiting the sale of beer to persons u...

We investigate the (functional) convex order of for various continuous martingale processes, either with respect to their diffusions coefficients for Lévy-driven SDEs or their integrands for stochastic integrals. Main results are bordered by counterexamples. Various upper and lower bounds can be derived for pathwise European option prices in local volatility models. In view of numerical applica...

The fungal pathogen Neozygites tanajoae Delalibera Jr., Humber & Hajek sp. nov. (Zygomycetes: Entomophthorales) is being used in Africa as a biological control agent against the introduced cassava green mite (CGM), Mononychellus tanajoa (Bondar) (Acari: Tetranychidae). This fungus is specific to CGM and has been referred to as N. floridana (Weiser & Muma) Remaud. & Keller, a common pathogen of ...

A worker in the nose department of a largely attended general hospital has not to wait long before he comes up against some unpleasant accident following such a simple procedure as antrum puncture, or an attempted puncture. Fortunately most of these accidents are trivialMishaps like the entry of the trocar into the opposite wall resulting in infiltration and emphysema of soft parts of the cheek...

Nasal coda emergence (NCE) (sometimes referred to as “restoration”) is the process by which a nasal vowel develops an excrescent nasal coda which may or may not have been present in an earlier form of the spoken language. NCE is operative in the Carioca (Rio de Janeiro) dialect of Brazilian Portuguese (CBP), an Ibero-Romance language with five phonemically nasal vowels. The output of NCE (in th...

Enterprises are facing a challenging dilemma. In order to be able to accommodate peak loads on their IT systems, they must maintain large computing clusters, which lie idle most of the time. At the same time, IT departments are under constant pressure to cut down on hardand software expenses. Grid technology offers a promising way out of this dilemma by allowing the dynamic sharing both within ...