1,306,685 research outputs found
Unification: An international aerospace information issue
Science and technology projects are becoming more and more international and interdisciplinary. Other parts of the world, notably Europe, are increasingly powerful players in the aerospace business. This change has led to the development of various aerospace information initiatives in other countries. With scarce resources in all areas of government and industry, the NASA STI Program is reviewing its current acquisition and exchange practices and policies to factor in the changing requirements and new opportunities within the international community. Current NASA goals and activities are reviewed with a view toward developing a scenario for establishing an international aerospace data base, maintaining compatibility among national aerospace information systems, eliminating duplication of effort, and sharing resources through international cooperation wherever possible
Unification: An international aerospace information opportunity
Science and technology projects are becoming more and more international and interdisciplinary. Other parts of the world, notably Europe, are increasingly powerful players in the aerospace industry. This change has led to the development of various aerospace information initiatives in other countries. With scarce resources in all areas of government and industry, the NASA STI Program is reviewing its current acquisition and exchange practices and policies to factor in the changing requirements and new opportunities within the international community. Current NASA goals and activities are reviewed with a new view toward developing a scenario for establishing an international aerospace database, maintaining compatibility among national aerospace information systems, eliminating duplication of effort, and sharing resources through international cooperation wherever possible
Entanglement preserving local thermalization
We investigate whether entanglement can survive the thermalization of
subsystems. We present two equivalent formulations of this problem: (1) Can two
isolated agents, accessing only pre-shared randomness, locally thermalize
arbitrary input states while maintaining some entanglement? (2) Can
thermalization with local heat baths, which may be classically correlated but
do not exchange information, locally thermalize arbitrary input states while
maintaining some entanglement? We answer these questions in the positive at
every nonzero temperature and provide bounds on the amount of preserved
entanglement. We provide explicit protocols and discuss their thermodynamic
interpretation: we suggest that the underlying mechanism is a speed-up of the
subsystem thermalization process. We also present extensions to multipartite
systems. Our findings show that entanglement can survive locally performed
thermalization processes accessing only classical correlations as a resource.
They also suggest a broader study of the channel's ability to preserve
resources and of the compatibility between global and local dynamics.Comment: 6+7 pages, 1 figure, closed to the published versio
Letters to the Editor
Letter responding to an article predicting the phaseout of government information librarians in a survey of Association of Research Library (ARL) Directors. We criticize this conclusion maintaining that the multifaceted and interdisciplinary nature of government information makes it more critical that libraries users needing government information resources need to have highly trained and specializing librarians with extensive knowledge of these resources assisting them
Management of Dryland Sustainable Agriculture
The study was conducted in the Bhiwani district of Haryana state, which was selected purposively on the basis of maximum area under dryland agriculture. From the four blocks in the Bhiwani district 200 farmers (50 farmers from each block) were selected randomly. The concept of sustainable agriculture involves the evolution of a new type of agriculture rich in technology and information, with much less than intensive energy use and market purchased inputs. Thus, sustainability is the successful management of resources to satisfy the challenging human needs, while maintaining or enhancing the quality of environment and conserving natural resources. Keeping in view the ever-increasing population, development of dry land agriculture, the depletion of natural resources, environmental pollution and limitations of sustainable agriculture a study was conducted to find out the perception of dryland farmers about economic and social aspects of sustainable dryland agriculture in Haryana (India). The study revealed that majority of the farmers perceived minimum tillage, crop diversification, soil fertilization application, integrated nutrient management, weed control, integrated pest management, maintaining plant population, drought resistant varieties, moisture and water conservation practices, agro-forestry and subsidiary occupation like livestock, poultry, horticulture, vegetable etc., as economically feasible, viable, as well as socially acceptable and sustainable for sustainable dryland agriculture.Environmental Economics and Policy, Farm Management,
A critical comparison of approaches to resource name management within the IEC common information model
Copyright @ 2012 IEEEElectricity network resources are frequently identified within different power systems by inhomogeneous names and identities due to the legacy of their administration by different utility business domains. The IEC 61970 Common Information Model (CIM) enables network modeling to reflect the reality of multiple names for unique network resources. However this issue presents a serious challenge to the integrity of a shared CIM repository that has the task of maintaining a resource manifest, linking network resources to master identities, when unique network resources may have multiple names and identities derived from different power system models and other power system applications. The current approach, using CIM 15, is to manage multiple resource names within a singular CIM namespace utilizing the CIM “IdentifiedObject” and “Name” classes. We compare this approach to one using additional namespaces relating to different power systems, similar to the practice used in CIM extensions, in order to more clearly identify the genealogy of a network resource, provide faster model import times and a simpler means of supporting the relationship between multiple resource names and identities and a master resource identity.This study is supported by the UK National Grid and Brunel University
Brain Drain: The Mere Presence of One’s Own Smartphone Reduces Available Cognitive Capacity
Our smartphones enable—and encourage—constant connection to information, entertainment, and
each other. They put the world at our fingertips, and rarely leave our sides. Although these devices have immense potential
to improve welfare, their persistent presence may come at a cognitive cost. In this research, we test the “brain
drain” hypothesis that the mere presence of one’s own smartphone may occupy limited-capacity cognitive resources,
thereby leaving fewer resources available for other tasks and undercutting cognitive performance. Results from two
experiments indicate that even when people are successful at maintaining sustained attention—as when avoiding
the temptation to check their phones—the mere presence of these devices reduces available cognitive capacity. Moreover,
these cognitive costs are highest for those highest in smartphone dependence. We conclude by discussing the
practical implications of this smartphone-induced brain drain for consumer decision-making and consumer welfare.Marketin
Visualisation of device datasets to assist digital forensic investigation
The increasing use of digital devices in our everyday lives, and their ever-increasing storage capacities places digital forensics investigatory resources under significant pressure. The workload for investigators is increasing, and the time required to analyse the datasets is not decreasing to compensate. This research looks at the potential for utilising information visualisation techniques to increase investigative efficiency with a view to decreasing the overall time taken to investigate a case, while still maintaining a high level of accuracy. It is envisaged that this may have the potential to lead to a reduced backlog of cases for law enforcement agencies, and expedited processing of criminal cases involving digital evidenc
H2O: An Autonomic, Resource-Aware Distributed Database System
This paper presents the design of an autonomic, resource-aware distributed
database which enables data to be backed up and shared without complex manual
administration. The database, H2O, is designed to make use of unused resources
on workstation machines. Creating and maintaining highly-available, replicated
database systems can be difficult for untrained users, and costly for IT
departments. H2O reduces the need for manual administration by autonomically
replicating data and load-balancing across machines in an enterprise.
Provisioning hardware to run a database system can be unnecessarily costly as
most organizations already possess large quantities of idle resources in
workstation machines. H2O is designed to utilize this unused capacity by using
resource availability information to place data and plan queries over
workstation machines that are already being used for other tasks. This paper
discusses the requirements for such a system and presents the design and
implementation of H2O.Comment: Presented at SICSA PhD Conference 2010 (http://www.sicsaconf.org/
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