The classical Shannon-Nyquist theorem allows regular sampling of bandlimited signals. Recently, this result was generalized to sampling of channels with delay-Doppler occupancy pattern of area less than one, resolving Bello’s conjecture in positive. In this paper, it is shown that stochastic channels possess a similar property, namely, that we can characterize the channel as long as the support...

During the past three decades, the study of children's peer relation­ ships and social skills has taken a prominent position in the fields of devel­ opmental and clinical psychology. This reflects, in part, a growing conviction that children who are socially skilled enjoy strong and positive relationships with their peers; in turn, those who are accepted by their peers and able to develop suppo...

It is unlikely that a high statistics study of r-lepton decays will be sensitive to the Higgs boson sector of electroweak physics. A Tau-Charm Factory is an ideal facility for the study of rare deca.ys of the rlepton. At a machine discussed in these Proceedings, one might expect to produce on the order of lo7 r’s per year. It is an interesting exercise to consider whether such a data sample is ...

Aims: It is necessary to design some comprehensive questionnaires with generable questions explaining the main variables of the test in order to use students' views efficiently for the evaluation of academic staffs' performance. So, the aim of the present study was to examine the reliability and validity of the academic staffs' evaluation by students' questionnaire. Methods: This survey researc...

INTRODUCTION This quality assurance project was designed to determine the reliability, completeness and comprehensiveness of the data entered into Niday Perinatal Database. METHODS Quality of the data was measured by comparing data re-abstracted from the patient record to the original data entered into the Niday Perinatal Database. A representative sample of hospitals in Ontario was selected ...

Ectomycorrhizal fungal (EMF) communities are highly diverse at the stand level. To begin to understand what might lead to such diversity, and to improve sampling designs, we investigated the spatial structure of these communities. We used EMF community data from a number of studies carried out in seven mature and one recently fire-initiated forest stand. We applied various measures of spatial p...

STUDY OBJECTIVE The aims were (1) to sample a specified subgroup of the Asian minority; (2) to give proper representation to those outside the areas of concentration; and (3) to evaluate the costs and benefits of the method. DESIGN Glasgow postcodes with varying concentrations of Asians were sampled, and 173 Asians aged 30-40 were interviewed after household screening of 1439 Asian names iden...

Fire is frequently used as a land management tool for cattle ranching and annual crops in the Amazon. However, these maintenance fires often escape into surrounding forests, with potentially severe impacts for forest biodiversity. We examined the effect of experimental fires on leaf-litter arthropod abundance in a seasonally-dry forest in the Brazilian Amazon. The study plots (50 ha each) inclu...