Introduction As computing grows increasingly more data oriented, the speed of data handling, and especially of storage functions, becomes the limiting factor in the overall performance of modern computers. Storage systems typically use several technologies, which are linked together with the objective of effectively utilizing the advantages of each technology (high speed, low cost). Designing o...

A systematic investigation of sorbent-trap sampling, which is a method that uses paired sorbent traps to measure total vapor phase mercury (Hg), was carried out at two coal-fired power plants. The objective of the study was to evaluate the effects (if any) on data quality when the following aspects of the sorbent trap method are varied: (a) sorbent trap configuration; (b) sampling time; and (c)...

The publishing industry is at the verge of an era, wherein particular professional customers of publishing products are not so much interested in comprehensive books and journals, i.e. traditional publishing products, anymore as they now are interested in possibly structured information pieces delivered just-in-time as a certain information need arises. This requires a transformation of the pub...

The objective of our study was to simulation of carbon monoxide (CO) dispersion exited from the stacks of a cement industry of Doroud, Iran by Gaussian Model (GM). Four sampling period was conducted to measurement of CO from the factory's three-stack flow during one year. The input parameters for were the rate of CO emission, meteorological data, factors of related to the stack, and factors of ...

Operating systems for sensor networks must provide energy and memory-space efficient execution environments for applications because of the resource constraints of the sensor nodes. The shared-stack cooperative threads have been proposed to conserve stack memory-space and to minimize the possibility of stack overflow in the sensor operating systems. However, stack switching brings about externa...

The Bluetooth radio system is an ideal communications tool for lightweight autonomous mobile robots but little research interest has been targeted at this application. We present in this paper an environment which allows behavior-based autonomous mobile robotic simulation to take advantage of synthetic Bluetooth communications. Two components comprise our system. A highly adaptable mobile robot...

A subclass of the LR(O)-grammars, the class of simple chain grammars is introduced. Although there exist simpio chain grammars which are not LL(k) for any k > 0, this new class of grammars is very closely related to the LL(1) and simple LL(1) grammars. In fact it can be shown that every simple chain grammar has an equivalent simple LL(1) grammar. Cover properties for simple chain grammars are i...

We prove that the multivariate zeta function of a sofic-Dyck shift is the commutative series of some visibly pushdown language. As a consequence the zeta function of a sofic-Dyck shift is the generating function of a visibly pushdown language and is thus an N-algebraic series.

In this document an idea is submitted how IP and ARP can be used on inhomogeneous FDDI networks (FDDI networks with single MAC and dual MAC stations) by introducing a new protocol layer in the protocol suite of the dual MAC stations. Thus two dual MAC stations are able to do a load splitting across the two rings and use the double bandwidth of 200 Mbits/s as single MAC stations. The new layer i...