The Ihstnbuted Queue Dual Bus (DQDB) protocol, wliich has been specified by the IEEE 802 6 ;is the Metropolitan Area Networks (MANS) standard, has an undesirable feature that busy slots that has been alreadb received ( I e read) continue to propagate d0wti:;tre'Wl riiinecessarily The use of special nodes, known as erasure nodes. allows conversion of read slots to empty, so that downstream nodes...

Benos DJ, Bashari E, Chaves JM, Gaggar A, Kapoor N, LaFrance M, Mans R, Mayhew D, McGowan S, Polter A, Qadri Y, Sarfare S, Schultz K, Splittgerber R, Stephenson J, Tower C, Walton RG, Zotov A. The ups and downs of peer review. Adv Physiol Educ 31: 145–152, 2007; doi:10.1152/advan.00104.2006.— This article traces the history of peer review of scientific publications, plotting the development of ...

We construct a unique (2, 0) supersymmetric action in six dimensions, describing a tensor multiplet interacting with a self-dual string. It is a sum of four terms: A free kinetic term for the tensor multiplet fields integrated over Minkowski space, a Nambu-Goto type kinetic term for the string integrated over the string worldsheet, a Wess-Zumino type electromagnetic coupling integrated over the...

In this paper a performance analysis of the CRMA medium access protocol is presented The CRMA Cyclic Reservation Multiple Access scheme is proposed as an access mechanism for high speed LANs and MANs An approximate computational method is derived to obtain the distribution functions of performance measures of interest like the medium access delay and the packet transfer time The analysis is don...

Opsomming Die geskiedenis van manlikheid is 'n relatief nuwe genre waarin Suid-Afrikaanse academic; begin beweeg. Geslagsidentiteit en identiteitsvorming het vanaf die 1980s w6reldwyd meer aandag begin geniet. ldentiteite word as belangrike faktore gesien in die vorming en instandhouding van gemeenskappe en kan die verloop van die geskiedenis net so veel as klas, ras, ouderdom, ens., bemvloed. ...

As appeared in Computer Communications WW lodek Dobosiewicz Pawee l Gburzy nski y Vincent Maciejewski z present a model for measuring the fairness in LANs and MANs. Abstract Fairness of very high-speed networks became a focus of interest since the moment Distributed Queue Dual Bus (dqdb) gained popularity. Several papers exposed its unfairness; at the same time, many researchers argued that thi...

Programming robots to work in unstructured changing environments has proven to be di cult Hu mans however e ectively function in such environ ments We propose a framework for programming robotic tasks using teleoperation based human to robot skill transfer We assume that there exists a human expert who can accomplish a task in an unstructured environment solely through teleoperation based feed ...

M alcohol consumption can affect the development of both the body and the brain of the fetus, with consequences that may persist throughout life. Only recently have researchers begun to evaluate the effects of prenatal alcohol exposure on per­ formance in school and the workplace as the patient pass­ es through childhood and adulthood. This article describes some types of structural brain damag...

Buffer Insertion Rings (BIR) are known to provide higher throughputs than other competing ring technologies. With the introduction of spatial reuse, MANs and LANs are at a greater advantage of maximizing bandwidth efficiency. Spatial reuse introduces the concept of congestion and Fairness Algorithms are needed to police the fair access of the low priority traffic on the ring. Two architectures ...

We give a non-technical outline of a program to study the (2, 0) theories in six space-time dimensions. Away from the origin of their moduli space, these theories describe the interactions of tensor multiplets and self-dual spinning strings. We argue that if the ratio between the square of the energy of a process and the string tension is taken to be small, it should be possible to study the dy...