7,000 research outputs found
Quantum phases in entropic dynamics
In the Entropic Dynamics framework the dynamics is driven by maximizing
entropy subject to appropriate constraints. In this work we bring Entropic
Dynamics one step closer to full equivalence with quantum theory by identifying
constraints that lead to wave functions that remain single-valued even for
multi-valued phases by recognizing the intimate relation between quantum
phases, gauge symmetry, and charge quantization.Comment: Presented at MaxEnt 2017, the 37th International Workshop on Bayesian
Inference and Maximum Entropy Methods in Science and Engineering (July 9-14,
2017, Jarinu, Brazil
Urban vehicular traffic: fitting the data using a hybrid stochastic model. Part II
In this second part of our research we used the models presented in
\emph{Modeling a vehicular traffic network. Part I} \cite{ogm1} to perform an
analysis of the urban traffic as recorded by cameras distributed in a chosen
sector of Tigre, a city in the province of Buenos Aires, Argentina. We found
that the circulation of vehicles -- the traffic dynamics --, along a whole day,
can be described by a hybrid model that is an adapted blend of model 2, for an
open linear system, with model 3, which is nonlinear, developed in Part I. The
objectives of this work were, firstly, to verify whether the vehicular flux can
be modeled as an -step stochastic process for its evolution, for the
time. Secondly, to find out if the model, with its parameters fixed to describe
the traffic of a single day, may adequately describe the traffic in other days.
Thirdly, to propose changes in the already established set of the urban traffic
rules in order to optimize the vehicular flow and to diminish the average time
that a vehicle stays idle at the semaphores. We estimate that the goals were
achieved satisfactorily within the margins of the experimental errors of the
gathered data.Comment: 12 pages, 11 figure
Institutional and policy analysis of river basin management: the Fraser River Basin, Canada
The authors describe and analyze a nongovernmental, multi-stakeholder, consensus-based approach to river basin management in the Fraser River basin in Canada. The Fraser River drains 238,000 km2 of British Columbia, supporting nearly 3 million residents and a diverse economy. Water management issues include water quality and allocation, flood protection, and emerging scarcity concerns in portions of the basin. The Fraser Basin Council (FBC) is a locally-initiated nongovernmental organization (NGO) with representation from public and private stakeholders. Since evolving in the 1990s from earlier programs and projects in the basin, FBC has pursued several objectives related to a broad concept of basin"sustainability"incorporating social, economic, and environmental aspects. The NGO approach has allowed FBC to match the boundaries of the entire basin, avoid some intergovernmental turf battles, and involve First Nations communities and private stakeholders in ways governmental approaches sometimes find difficult. While its NGO status means that FBC cannot implement many of the plans it agrees on and must constantly work to maintain diverse yet stable funding, FBC holds substantial esteem among basin stakeholders for its reputation for objectivity, its utility as an information sharing forum, and its success in fostering an awareness of interdependency within the basin.Agricultural Knowledge&Information Systems,Water Conservation,Environmental Economics&Policies,Water and Industry,Sanitation and Sewerage,Water Supply and Sanitation Governance and Institutions,Drought Management,Town Water Supply and Sanitation,Water and Industry,Water Conservation
Genome Sequences for Three Strains of Kocuria rosea, Including the Type Strain
Genomes from three strains of Kocuria rosea were sequenced. K. rosea ATCC 186, the type strain, was 3,958,612 bp in length with a total G+C content of 72.70%. When assembled, K. rosea ATCC 516 was 3,862,128 bp with a 72.82% G+C content. K. rosea ATCC 49321 was 4,018,783 bp in size with a 72.49% G+C content
Complete Genome Sequence of Staphylococcus epidermidis ATCC 12228 Chromosome and Plasmids Generated by Long-Read Sequencing
Staphylococcus epidermidis ATCC 12228 was sequenced using a long-read method to generate a complete genome sequence, including some plasmid sequences. Some differences from the previously generated short-read sequence of this nonpathogenic and non-biofilm-forming strain were noted. The assembly size was 2,570,371 bp with a total G+C% content of 32.08%
Differential adaptation strategies by agro-ecological zones in African livestock management
This paper examines how farmers have adapted their livestock operation to the current climate in each agro-ecological zone in Africa. The authors examine how climate has affected the farmer's choice to raise livestock or not and the choice of animal species. To measure adaptation, the analysis regresses the farmer's choice on climate, soil, water flow, and socio-economic variables. The findings show that climate does in fact affect the farmer's decision about whether to raise livestock and the species. The paper also simulates how future climates may alter these decisions using forecasts from climate models and the estimated model. With a hot dry scenario, livestock ownership will increase slightly across all of Africa, but especially in West Africa and high elevation agro-ecological zones. Dairy cattle will decrease in semi-arid regions, sheep will increase in the lowlands, and chickens will increase at high elevations. With a mild and wet scenario, however, livestock adoption will fall dramatically in lowland and high latitude moist agro-ecological zones. Beef cattle will increase and sheep will fall in dry zones, dairy cattle will fall precipitously and goats will rise in moist zones, and chickens will increase at high elevations but fall at mid elevations. Livestock adaptations depend on the climate scenario and will vary across the landscape. Agro-ecological zones are a useful way to capture how these changes differ from place to place.Livestock&Animal Husbandry,Wildlife Resources,Peri-Urban Communities,Rural Urban Linkages,Dairies&Dairying
- …
