The present paper is a five-week content analysis of crime stories reported on television news. The sample consists of three nightly newscasts available on a rural, midwestern cable system. Included are nightly newscasts from a national network, a big city television station, and a small town channel. Findings from this exploratory study show that these three sources of television news differ s...

In this paper an aggregate model for manufacturing systems consisting of flow lines with finite buffers and parallel servers is proposed. The proposed model is a multi-server station with process times depending on the work in process (WIP). An algorithm is developed to measure the WIP-dependent process times directly from industrial data such as arrival times at and departure times from the ma...

Estimation of the fast polarization direction of shear seismic waves that deviate from horizontal axis is a valuable approach to investigate the characteristics of the lower crust and uppermost mantle structures. The lattice preferred orientation of crystals, which is generally parallel to the downward or upward flow of the mantle or crust, is an important reason for the occurrence of fast axis...

A novel block diagonalisation (BD)-based Multiuser multiple input multiple output (MU-MIMO)-aided relaying scheme is proposed for downlink transmissions, which does not require any channel state information at the base station (BS) and decomposes a MU-MIMO-aided relaying system into several parallel single-user MIMO-assisted relaying schemes. Furthermore, based on the proposed algorithm the opt...

This paper studies the application of the time segmentation parallel simulation approach to efficient simulation of simple manufacturing queueing systems, namely systems of queues in tandem with manufacturing blocking at each station. We discuss the difficulties in the way of applying the time segmentation method to this class of manufacturing systems and demonstrate that the time segmentation ...

To enhance the system throughput and to extend coverage of IEEE 802.16 networks, relay stations can be implemented. If a user station is attached to the base station (BS) through several relays stations (RS), a multi-hop communication occurs. To enable multi-hop communication, the IEEE 802.16j standard proposes two approaches how RSs can be implemented into the network. The first approach group...

19 20 21 22 23 Johnny Appleseed and the Greenhouse American Parallel for Oxford Research Gene Therapy OK'd U.S. and Partners Sign Space Station Agreement Liftoff U.S.S.R. to Set Up Fund for Basic Research 24 Cut-Price Plan Offered for SDI Deployment 25 EPA: Ozone Treaty Weak 26 A New Way to Slice the Doctor's Pie 27 Congress Passes Reforms in Pesticide Law * Trivelpiece to Leave AAAS U Breuning...

We consider a synchronized queueing system in which customers arrive according to a Poisson process to a station consisting of c parallel servers, each with its own queue. Upon arrival, customers split into parts and each part joins the corresponding queue. Under the assumption that the service requirements of the c parts of each customer are strongly ordered we obtain the joint distribution of...

The article presents a diffusion approximation model of a G/G/N/N station – N parallel servers without queueing. Diffusion approximation allows us to include in queueing models fairly general assumptions. First of all it gives us a tool to consider in a natural way transient states of queues, which is very rare in classical queueing models. Then we may consider input streams with general intera...

A modular transfer line designing problem is investigated. The problem is to find the best subset of modules (machining units) from a given set and to assign them to different stations so that technological constraints and cycle upper limit are respected and the line cost is minimal. The investigated lines have a mixed activation mode for the machining units of each station, i.e. the units of e...