An optimal synchronous bandwidth allocation scheme for guaranteeing synchronous message deadlines with the timed-token MAC protocol

This paper investigates the inherent timing properties of the timed-token medium access control (MAC) protocol necessary to guarantee synchronous message deadlines in a timed token ring network such as, fiber distributed data interface (FDDI), where the timed-token MAC protocol is employed. As a result, an exact upper bound, tighter than previously published, on the elapse time between any number of successive token arrivals at a particular node has been derived. Based on the exact protocol timing property, an optimal synchronous bandwidth allocation (SBA) scheme named enhanced MCA (EMCA) for guaranteeing synchronous messages with deadlines equal to periods in length is proposed. Thm scheme is an enhancement on the previously publiibed MCA scheme

Land cover change monitoring within the east central Louisiana study site: A case for large area surveys with LANDSAT multispectral scanner data

Results established for four digital procedures developed for characterizing the radiometric changes between multidate LANDSAT spectral data sets into meaningful measures of land cover/use dynamics are documented. Each technique's performance was contrasted against digitized land use change maps, which were produced from contemporaneous, retrospective aerophoto coverage, in a cell by cell comparison over a one half by one degree area in east central Louisiana as a standard for comparison. The four techniques identify from 10.5 to 13.0% loss in area of forestland in a five year period; however, they differ more by how accurately this amount of change is distributed, the need for ancillary ground truth, and amount of usable information that is extractable. All require some method of digitally co-registering the two data sets. All are capable of providing tabular statistics as well as map products. Two are capable of detecting changes and identifying their locations. The other two, in addition to this, provide information to qualify land cover conditions at each end of the study interval

An evaluation of the effectiveness of three types of study guides in producing immediate and delayed recall.

Thesis (Ed.M.)--Boston Universit

Oxygen isotopic paleotemperatures across the Runangan-Whaingaroan (Eocene-Oligocene) boundary in a New Zealand shelf sequence

Oxygen isotopic compositions of the tests of mainly benthic foraminifera, from sections of conformable Late Eocene (Runangan) to Early Oligocene (Whaingaroan) shelf mudstones, at both Cape Foulwind and Port Elizabeth, western South Island, indicate that shelf sea paleotemperatures followed the global open-ocean trend towards a Paleogene minimum near the Eocene-Oligocene boundary. Throughout the latest Eocene, temperatures declined steadily by 3°C, showed a temporary minor warming at the Eocenc-Oligocene boundary, dropped sharply by 2°C in the Early Oligocene, and ameliorated significantly later in the Early Oligocene. The qualitative temperature trends for New Zealand shelf waters at this time are similar to those inferred from earlier paleontologic syntheses and limited oxygen isotopic work, but involve a range of temperatures within the warm and cool temperate climatic zones and an absolute temperature depression across the Eocene-Oligocene boundary of only 5°C from about 17 to 12°C. Results are consistent with isotopic paleotemperatures determined from deep-sea sediment cores south of New Zealand where the cooling is inferred to mark the onset of production of Antarctic bottom waters at near-freezing temperatures

Cycle-time properties of the timed token medium access control protocol

We investigate the timing properties of the timed token protocol that are necessary to guarantee synchronous message deadlines. A tighter upper bound on the elapse time between the token's lth arrival at any node i and its (l + v)th arrival at any node k is found. A formal proof to this generalized bound is presented

The systemic impact of a consultant within an organisational field

My public work represents both a body of knowledge developed through valid and robust research and grounded in practice as well as evidence of a set of working methods and processes through which it has emerged. The body of knowledge it represents about the cultural sector as a whole, and the dance field in particular, is deep and I have evidenced that this has impacted significantly on the field. Through reflection on my practice, my working methods and processes, I have been able to extrapolate some key learning that may inform the way in which we consider the relationships between consultancy, leadership, organisational development and systemic change in organisational fields. I have proposed that the role of the consultant as thought leader and transformational change agent is potent. My hypothesis is that a consultant working within a given field can have system-wide impact because the leadership exerted extends beyond the boundaries of individual organisations. This submission draws on an extensive body of research carried out over the last 6 years in my work as a freelance consultant. It relates the work to the above hypothesis in order to explore the interrelated processes. I extract learning from this exploration that will assist with the ongoing development of a body of knowledge concerning systems and leadership, consultancy, organisational and field development and applied research. My work has crossed art form boundaries but, more recently (2005- present), has focussed on the dance field. The works to which this statement refers draw primarily on research carried out within the dance field between 2007 and 2010. I examine the primary works in dance to analyse impact in a specific field. A secondary body of work supports the analysis drawing from a range of different research projects undertaken within different art form contexts along with a body of experience that includes my non executive leadership. I examine these secondary works to analyse the role of the consultant as leader and then reference all works in examining the impact of applied research

Changes in the Distribution of Low Energy Trapped Protons Associated with the 17 Apr. 1965, Magnetic Storm

Temporal variations of geomagnetically trapped low energy protons recorded by Injun 4 during 17 Apr. 1965 magnetic stor