DSTP-AN: A Distributed System for Transaction Processing Based on Data Resource Migration in ATM Networks

The dynamic migration of data resources has become a strong tool for transaction processing in broadband networks such as ATM. In this paper, a distributed system that takes advantage of data resource migration for transaction processing in ATM networks has been proposed. The proposed system provides mechanisms to select the transaction processing method, to migrate data resources in a way that reduces the time delay and message traffic in locating and accessing them. The first mechanism selects one of the two transaction processing methods: the traditional method that uses two phase commit protocol and other new method based on data resource migration. The second mechanism attempts to improve performance by making each site follow a local policy for directing requests to locate and access data resources as well as migrating them through the system. For this, a new scheme that focuses on reducing the time delay and message traffic needed to access the migratory data resources is proposed. The performance of the proposed scheme has also been evaluated and compared with one of the existing schemes by a simulation study under different system parameters such as frequency of access to the data resources, frequency of data resource migrations, scale of network, etc

Service Delivery Utilizing Wireless Technology Within The Air Traffic Control Communication And Navigation Domain To Improve Positioning Awareness

Current air traffic levels around the world have pushed the enterprise architecture deployed to support air traffic management to the breaking point. Technology limitations prevent expansion of the current solutions to handle rising utilization levels without adopting radically different information delivery approaches. Meanwhile, an architectural transition would present the opportunity to support business and safety requirements that are not currently addressable. The purpose of this research paper is to create a framework for more effectively sharing positioning information utilizing improved air traffic control navigation and communication systems

Maine Perspective, v 8, i 2

The Maine Perspective, a publication for the University of Maine, was a campus newsletter produced by the Department of Public Affairs which eventually transformed into the Division of Marketing and Communication. Regular columns included the UM Calendar, Ongoing Events, People in Perspective, Look Who\u27s on Campus, In Focus, and Along the Mall. The weekly newsletter also included position openings on campus as well as classified ads. Articles in this issue focus on UMaine being seen as a leader in the integration and application of information technology in the state of Maine; the inaugural year of the School of Marine Sciences; and a personal profile of Steve Carignan

Evaluation of the current knowledge limitations in breast cancer research: a gap analysis

BACKGROUND A gap analysis was conducted to determine which areas of breast cancer research, if targeted by researchers and funding bodies, could produce the greatest impact on patients. METHODS Fifty-six Breast Cancer Campaign grant holders and prominent UK breast cancer researchers participated in a gap analysis of current breast cancer research. Before, during and following the meeting, groups in seven key research areas participated in cycles of presentation, literature review and discussion. Summary papers were prepared by each group and collated into this position paper highlighting the research gaps, with recommendations for action. RESULTS Gaps were identified in all seven themes. General barriers to progress were lack of financial and practical resources, and poor collaboration between disciplines. Critical gaps in each theme included: (1) genetics (knowledge of genetic changes, their effects and interactions); (2) initiation of breast cancer (how developmental signalling pathways cause ductal elongation and branching at the cellular level and influence stem cell dynamics, and how their disruption initiates tumour formation); (3) progression of breast cancer (deciphering the intracellular and extracellular regulators of early progression, tumour growth, angiogenesis and metastasis); (4) therapies and targets (understanding who develops advanced disease); (5) disease markers (incorporating intelligent trial design into all studies to ensure new treatments are tested in patient groups stratified using biomarkers); (6) prevention (strategies to prevent oestrogen-receptor negative tumours and the long-term effects of chemoprevention for oestrogen-receptor positive tumours); (7) psychosocial aspects of cancer (the use of appropriate psychosocial interventions, and the personal impact of all stages of the disease among patients from a range of ethnic and demographic backgrounds). CONCLUSION Through recommendations to address these gaps with future research, the long-term benefits to patients will include: better estimation of risk in families with breast cancer and strategies to reduce risk; better prediction of drug response and patient prognosis; improved tailoring of treatments to patient subgroups and development of new therapeutic approaches; earlier initiation of treatment; more effective use of resources for screening populations; and an enhanced experience for people with or at risk of breast cancer and their families. The challenge to funding bodies and researchers in all disciplines is to focus on these gaps and to drive advances in knowledge into improvements in patient care

Preparing for a Northwest Passage: A Workshop on the Role of New England in Navigating the New Arctic

Preparing for a Northwest Passage: A Workshop on the Role of New England in Navigating the New Arctic (March 25 - 27, 2018 -- The University of New Hampshire) paired two of NSF\u27s 10 Big Ideas: Navigating the New Arctic and Growing Convergence Research at NSF. During this event, participants assessed economic, environmental, and social impacts of Arctic change on New England and established convergence research initiatives to prepare for, adapt to, and respond to these effects. Shipping routes through an ice-free Northwest Passage in combination with modifications to ocean circulation and regional climate patterns linked to Arctic ice melt will affect trade, fisheries, tourism, coastal ecology, air and water quality, animal migration, and demographics not only in the Arctic but also in lower latitude coastal regions such as New England. With profound changes on the horizon, this is a critical opportunity for New England to prepare for uncertain yet inevitable economic and environmental impacts of Arctic change

Migration and Winter Movement Ecology of Red-Throated Loons (Gavia Stellata) in Eastern North America

Migratory animals exploit multiple habitats across the extent of their range and conditions experienced can have considerable effects on individual survival and population size. Understanding where species are exposed to survival risks and evolutionary selection pressures and how connected are different portions of the range requires defining a complete annual movement network with all major seasonal sites—e.g., breeding, migratory stopovers, staging, and wintering—and describing where populations may or may not overlap in space and time. I used movement data collected from satellite-tagged Red-throated Loons (Gavia stellata) to provide new and more accurate information about spatial use during the full annual cycle for this species in eastern North America. I examined whether specific behavioral states could be inferred from raw spatiotemporal data, and explored the degree to which environmental cues cause variation in migratory movements, to understand how they will respond to environmental changes in different areas of their migratory corridor. Lastly, I estimated winter home ranges of individual loons and quantified how selection of these areas varied in relation to environmental conditions to better describe important winter habitat for the species within the Mid-Atlantic Bight. Four primary migration routes were used to travel between mid-Atlantic wintering and arctic breeding grounds. The major sites identified as core use areas included lower Hudson Bay and James Bay, the lower Great Lakes, the Gulf of St Lawrence, Nantucket Shoals, and the major bays of the mid-Atlantic region, where birds were captured in winter, including Delaware Bay, Chesapeake Bay, and Pamlico Sound. Individuals differed in their tendency to be intensive versus extensive in their movement behaviors, which corresponded with individual differences in the scale of their use of the landscape. Photoperiod was an important indicator of increased movement at the onset of migration and wind speed was indicative of whether conditions were conducive to migratory flights. Stopover habitat and winter home ranges were associated with warmer, shallow, coastal waters with higher surface current velocities and chlorophyll a concentration. Overall, however, Red-throated Loons exhibited a high degree of individual variation in their movement behavior and responses to environmental conditions

Descentralisation, Integration and polycentrism in Barcelona

In this study the employment subcentres of the Metropolitan Region of Barcelona are identified using different criteria. Once catalogued according to their nature,i.e. subcentres arising from integration and decentralisation, they are analysed to see whether their impact on population density depends on their origin. The results obtained confirm a greater impact of integrated subcentres in comparison with decentralised ones, amplified in turn by the fact that the former are further from the CBD and present a greater degree of self-containment in the labor market.Employment decentralisation, policentric city, metropolitan integration