Datacenters have traditionally been designed and deployed as a collection of server racks, where each rack consists of approximately 42 units of servers connected to one or two edge switches. In this model, computation is generally localized within a single server, and the edge switches provide 10 or 40 Gbps of non-blocking bandwidth between servers in the same rack. Although the traditional mo...

An operational model of household activity scheduling is proposed. The model is based on a theory entailing behavioral principles of how persons acquire, represent, and use information from and about the environment. Choices of destinations and departure times are consequences of the scheduling of a set of activities to be executed in a given time cycle. Illustrative computer simulations of the...

This paper addresses the relations between travel behaviour and land use patterns using a Structural Equations Modelling (SEM) framework. SEM is a multi equation technique which is particularly suited for the study of complex relations, since it allows modelling the effects of land use patterns on travel behaviour while controlling for self selection bias and effects between endogenous variable...

Abstract. We study message transfer in a 2− d communication network of regular nodes and randomly distributed hubs. We study both single message transfer and multiple message transfer on the lattice. The average travel time for single messages travelling between source and target pairs of fixed separations shows q−exponential behaviour as a function of hub density with a characteristic power-la...

Currently, most models proposed for spatio-temporal databases describe changes that involve independent entities. However, many dynamic applications need new models to relate evolution of spatial entities linked by common properties and constraints or relationships. In transportation GIS, an activity-event matrix describes individual entity behaviours, travel activities and routes on a transpor...

The World Health Organization adult ADHD self-report scale (ASRS): a short screening scale for use in the general population. Q Do the long and short forms of the attention deficit/hyperactivity disorder (ADHD) self-report scale effectively diagnose ADHD in adults? METHODS Design: Prospective diagnostic cohort study. Patients: 154 people aged 18–44 years who participated in the US National Como...

BACKGROUND Adult attention deficit-hyperactivity disorder (ADHD) is underdiagnosed in the primary care setting despite 3% to 6% of adults having ADHD-like symptoms. The Adult ADHD Self-Report Scale-V1.1 (ASRS-V1.1) is a validated, 6-question screen for adult ADHD. Our purpose was to analyze this tool for evaluating patients in a busy primary care setting. METHODS The ASRS-V1.1 was administere...

Paratransit plays an important role in the urban passenger transportation system in the developing countries. Three cities viz. Imphal East, Imphal West and Silchar in India have been undertaken for the study. Household survey and traffic survey have been employed to collect data for the paratransit users. Modelling techniques and tools also have been used to forecast the utility of paratransit...