Subjects -> ASTRONOMY (Total: 94 journals)
Showing 1 - 46 of 46 Journals sorted alphabetically
Advances in Astronomy     Open Access   (Followers: 51)
Annual Review of Astronomy and Astrophysics     Full-text available via subscription   (Followers: 39)
Annual Review of Earth and Planetary Sciences     Full-text available via subscription   (Followers: 63)
Artificial Satellites     Open Access   (Followers: 23)
Astrobiology     Hybrid Journal   (Followers: 14)
Astronomical & Astrophysical Transactions: The Journal of the Eurasian Astronomical Society     Hybrid Journal   (Followers: 6)
Astronomical Journal     Full-text available via subscription   (Followers: 8)
Astronomical Review     Open Access   (Followers: 4)
Astronomische Nachrichten     Hybrid Journal   (Followers: 4)
Astronomy & Geophysics     Hybrid Journal   (Followers: 48)
Astronomy and Astrophysics     Full-text available via subscription   (Followers: 60)
Astronomy and Astrophysics     Open Access   (Followers: 32)
Astronomy and Computing     Hybrid Journal   (Followers: 2)
Astronomy Letters     Hybrid Journal   (Followers: 22)
Astronomy Reports     Hybrid Journal   (Followers: 15)
Astronomy Studies Development     Open Access   (Followers: 12)
Astroparticle Physics     Hybrid Journal   (Followers: 8)
Astrophysical Bulletin     Hybrid Journal   (Followers: 3)
Astrophysical Journal     Full-text available via subscription   (Followers: 19)
Astrophysical Journal Letters     Full-text available via subscription   (Followers: 14)
Astrophysical Journal Supplement Series     Full-text available via subscription   (Followers: 14)
Astrophysics     Hybrid Journal   (Followers: 29)
Astrophysics and Space Science     Hybrid Journal   (Followers: 46)
Astrophysics and Space Sciences Transactions (ASTRA)     Open Access   (Followers: 56)
Astropolitics: The International Journal of Space Politics & Policy     Hybrid Journal   (Followers: 12)
Celestial Mechanics and Dynamical Astronomy     Hybrid Journal   (Followers: 11)
Chinese Astronomy and Astrophysics     Full-text available via subscription   (Followers: 24)
Colloid Journal     Hybrid Journal   (Followers: 3)
Comptes Rendus Physique     Full-text available via subscription   (Followers: 2)
Computational Astrophysics and Cosmology     Open Access   (Followers: 3)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 11)
Earth, Moon, and Planets     Hybrid Journal   (Followers: 55)
Earth, Planets and Space     Open Access   (Followers: 74)
EAS Publications Series     Full-text available via subscription   (Followers: 8)
EPL Europhysics Letters     Partially Free   (Followers: 8)
Experimental Astronomy     Hybrid Journal   (Followers: 39)
Expert Opinion on Astronomy and Astrophysics     Open Access   (Followers: 7)
Extreme Life, Biospeology & Astrobiology - International Journal of the Bioflux Society     Full-text available via subscription   (Followers: 6)
Few-Body Systems     Hybrid Journal   (Followers: 1)
Foundations of Physics     Hybrid Journal   (Followers: 41)
Frontiers in Astronomy and Space Sciences     Open Access   (Followers: 12)
Galaxies     Open Access   (Followers: 6)
Globe, The     Full-text available via subscription   (Followers: 4)
Gravitation and Cosmology     Hybrid Journal   (Followers: 4)
Icarus     Hybrid Journal   (Followers: 75)
International Journal of Advanced Astronomy     Open Access   (Followers: 28)
International Journal of Astrobiology     Hybrid Journal   (Followers: 4)
International Journal of Astronomy     Open Access   (Followers: 19)
International Journal of Astronomy and Astrophysics     Open Access   (Followers: 29)
International Journal of Satellite Communications Policy and Management     Hybrid Journal   (Followers: 13)
International Letters of Chemistry, Physics and Astronomy     Open Access   (Followers: 12)
ISRN Astronomy and Astrophysics     Open Access   (Followers: 7)
Journal for the History of Astronomy     Full-text available via subscription   (Followers: 19)
Journal of Astrobiology & Outreach     Open Access   (Followers: 3)
Journal of Astronomical Instrumentation     Open Access   (Followers: 3)
Journal of Astronomical Telescopes, Instruments, and Systems     Hybrid Journal   (Followers: 5)
Journal of Astrophysics     Open Access   (Followers: 26)
Journal of Astrophysics and Astronomy     Open Access   (Followers: 52)
Journal of Atmospheric and Solar-Terrestrial Physics     Hybrid Journal   (Followers: 199)
Journal of Cosmology and Astroparticle Physics     Hybrid Journal   (Followers: 38)
Journal of Geophysical Research : Planets     Full-text available via subscription   (Followers: 179)
Journal of Geophysical Research : Space Physics     Full-text available via subscription   (Followers: 178)
Journal of High Energy Astrophysics     Full-text available via subscription   (Followers: 22)
Kinematics and Physics of Celestial Bodies     Hybrid Journal   (Followers: 10)
KronoScope     Hybrid Journal   (Followers: 1)
Macalester Journal of Physics and Astronomy     Open Access   (Followers: 4)
MNASSA : Monthly Notes of the Astronomical Society of South Africa     Full-text available via subscription   (Followers: 1)
Molecular Astrophysics     Full-text available via subscription   (Followers: 1)
Monthly Notices of the Royal Astronomical Society     Hybrid Journal   (Followers: 14)
Monthly Notices of the Royal Astronomical Society : Letters     Hybrid Journal  
Nature Astronomy     Hybrid Journal   (Followers: 8)
New Astronomy     Hybrid Journal   (Followers: 27)
New Astronomy Reviews     Full-text available via subscription   (Followers: 17)
Nonlinear Dynamics     Hybrid Journal   (Followers: 19)
NRIAG Journal of Astronomy and Geophysics     Open Access   (Followers: 5)
Open Astronomy     Open Access   (Followers: 2)
Physics of the Dark Universe     Open Access   (Followers: 4)
Planetary and Space Science     Hybrid Journal   (Followers: 101)
Planetary Science     Open Access   (Followers: 52)
Proceedings of the International Astronomical Union     Full-text available via subscription   (Followers: 2)
Publications of the Astronomical Society of Australia     Hybrid Journal   (Followers: 2)
Publications of the Astronomical Society of Japan     Hybrid Journal   (Followers: 3)
Publications of the Astronomical Society of the Pacific     Full-text available via subscription   (Followers: 4)
Research & Reviews : Journal of Space Science & Technology     Full-text available via subscription   (Followers: 17)
Research in Astronomy and Astrophysics     Full-text available via subscription   (Followers: 29)
Revista Mexicana de AstronomĂ­a y AstrofĂ­sica     Open Access   (Followers: 2)
Science China Physics, Mechanics & Astronomy     Hybrid Journal   (Followers: 4)
Solar Physics     Hybrid Journal   (Followers: 34)
Solar System Research     Hybrid Journal   (Followers: 14)
Space Science International     Open Access   (Followers: 192)
Space Science Reviews     Hybrid Journal   (Followers: 97)
Space Weather     Full-text available via subscription   (Followers: 24)
Transport and Aerospace Engineering     Open Access   (Followers: 13)
Universe     Open Access   (Followers: 5)
Similar Journals
Journal Cover
International Journal of Satellite Communications Policy and Management
Number of Followers: 13  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1742-7568 - ISSN (Online) 1742-7576
Published by Inderscience Publishers Homepage  [450 journals]
  • Mobility and delay in greedy geographic routing
    • Authors: Fraser Cadger; Kevin Curran; Jose A. Santos; Sandra Moffett
      Pages: 106 - 119
      Abstract: Opportunistic networking and geographic routing both represent fields of research in the area of mobile ad-hoc networking that seek to create dynamic, hop-by-hop, localised paths from source to destination thus enabling connectivity where no end-to-end path may be possible. Where they differ is in their approach to the problem of providing connectivity in a changing network. While geographic routing makes decisions based on physical locations, opportunistic networking seeks to take advantage of node mobility and select nodes that will physically carry the message closer to the destination and reduce the overall hop count. In spite of their differences, the similarity of the two approaches presents the opportunity of combining aspects from both paradigms to create hybrid protocols. This paper attempts to analyse the relationship between mobility and delay in greedy routing for use in designing future QoS-aware hybrid opportunistic-geographic protocols.
      Keywords: mobility; delay; greedy routing; geographic routing; location awareness; opportunistic networking; quality of service; QoS; mobile ad-hoc networks; MANETs; mobile networks; context awareness
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 106 - 119
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049547
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • Improving data delivery in opportunistic networks using probabilistic
           forwarding
    • Authors: Li-Ping Tung; Cheng-Long Tseng; Ling-Jyh Chen
      Pages: 120 - 137
      Abstract: As the number of opportunistic networking applications increases, the need for an effective routing scheme is becoming increasingly urgent. We propose the HEC-PF scheme for effective data forwarding in opportunistic networks. The scheme modifies the aggressive forwarding phase of our previous H-EC scheme by implementing a new probabilistic forwarding feature, which decides whether to forward a message to a newly encountered node based on the delivery probability. The performance in terms of delivery latency and completion ratio is evaluated by simulations. The results show that the HEC-PF scheme outperforms the EC and H-EC schemes, and the performance gain is even more substantial when network connectivity is extremely poor. We also show that its completion ratio improves as the maximum forwarding distance or the hop distance considered when calculating the delivery probability increases. The effectiveness of the HEC-PF scheme makes it an ideal solution for effective data delivery in opportunistic networks.
      Keywords: opportunistic networks; probabilistic forwarding; delay tolerant networks; routing; HEC-PF; H-EC; HEC; data delivery; delivery latency; completion ratio; simulation
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 120 - 137
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049548
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • DTN content sharing among commuters
    • Authors: Armir Bujari; Claudio Enrico Palazzi; Marco Roccetti; Gustavo Marfia
      Pages: 138 - 151
      Abstract: When discussing vehicular networking we have also to consider the multitude of commuters daily travelling to/from work through public transportation means such as buses, metros, and trains. Indeed, through their smartphones, commuters can generate traffic while moving, thus embodying a significant part of an urban communication scenario. In this context, we discuss a way to port the P2P paradigm into mobile disconnected networks composed by commuters' smartphones. Different from classical P2P file-sharing, users could exchange data in proximity with each other; they can also leverage on peer mobility and encounters in order to extend a requesting peer's reach-area to other local disconnected networks. This is achieved by implementing a DTN-like store-delegate-and-forward communication model over underlying social networks where a peer can delegate unaccomplished data downloads to frequently encountered peers. We show how involving frequently encountered peers/commuters improves the success ratio for the data search request while reducing useless communication overhead.
      Keywords: mobile ad-hoc networks; MANETs; delay tolerant networks; DTN; opportunistic file sharing; mobility; working day movement model; mobile networks; public transport; urban communications; P2P paradigm; peer-to-peer; commuters; commuter smart
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 138 - 151
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049549
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • Considering driver behaviour in vehicular delay tolerant networks
    • Authors: Kun-chan Lan; Chien-Ming Chou; Ching-Fang Yang
      Pages: 152 - 173
      Abstract: A key component for vehicular ad-hoc networks (VANET) simulations is a realistic vehicular mobility model, as this ensures that the conclusions drawn from simulation experiments will carry through to the real deployments. Node mobility in a vehicular network is strongly affected by the driving behaviour such as route choices. While route choice models have been extensively studied in the transportation community, as far as we know, the effects of driver behaviour on vehicular network simulations have not been discussed much in the networking literature. In this work, we set out to understand the effects of destination selection vehicular network simulation. We also discuss how different destination selection models affect event broadcasting in ITS application. We conclude that selecting a sufficient level of detail in the simulations, such as modelling of destination selection, is critical for evaluating VANET protocol design.
      Keywords: vehicular ad-hoc networks; VANETs; driver behaviour; simulation; destination selection; event dissemination; vehicle communication; delay tolerant networks; DTN; mobility modelling
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 152 - 173
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049550
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • A deterministic multifunctional architecture for highly adaptive small
           satellites
    • Authors: Sunday Ekpo; Danielle George
      Pages: 174 - 194
      Abstract: A deterministic multifunctional architecture design approach for a highly adaptive small satellite system is proposed in this paper. It enables five levels of design customisation of all categories of highly adaptive small satellites; adaptive functional modules implement higher-level customised and reconfigurable mission functions. Each adaptive multifunctional structural unit (AMSU) supports the subsystem functions as a 'structural and functional block' and comes either as a baseline or hybrid. Associated functional sub subsystem components are contained in each AMSU. This removes the conventional structural and functional subsystem boundaries. A meteorology spacecraft mission using a highly adaptive nanosatellite reveals, besides more advanced mission capabilities, 0.6 kg and 1 W mass- and power-savings respectively over a conventional nanosatellite system implementation. This novelty results in adaptive, reconfigurable and multifunctional architectures with economies of scale, timely launch, system-level reliability, flexible integration and test options, cost-effective mass production, post-mission reapplication and optimal performance at the desired mission objectives.
      Keywords: adaptive architectures; dynamic redundancy; field programmable gate arrays; FPGA; functional reliability; highly adaptive small satellites; in-orbit adaptation; multifunctional architecture; post-space mission reapplication; reconfigurable ar
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 174 - 194
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049543
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • Error-correcting codes for reliable communications in microgravity
           platforms
    • Authors: Décio L. Gazzoni Filho; Taufik Abrão; Marcelo Carvalho Tosin; Francisco Granziera <suffix>Jr.</suffix>
      Pages: 195 - 205
      Abstract: The PAANDA experiment was conceived to characterise the acceleration ambient of a rocket launched microgravity platform, specially the microgravity phase. The recorded data was transmitted to ground stations, leading to loss of telemetry information sent during the re-entry period. Traditionally, an error-correcting code for this channel consists of a block code with very large block size to protect against long periods of data loss. Instead, we propose the use of digital fountain codes along with conventional Reed-Solomon block codes to protect against long and short burst error periods, respectively. Aiming to use this approach for a second version of PAANDA to prevent data corruption, we propose a model for the communication channel based on information extracted from Cumã II's telemetry data, and simulate the performance of our proposed error-correcting code under this channel model. Simulation results show that nearly all telemetry data can be recovered, including data from the re-entry period.
      Keywords: rocket launched microgravity platforms; acceleration data acquisition; PAANDA; error-correcting codes; digital fountain codes; reliable communications; reliability; telemetry information; re-entry; data corruption; simulation
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 195 - 205
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049544
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • A protocol for a message system for the tiles of the heptagrid, in the
           hyperbolic plane
    • Authors: Maurice Margenstern
      Pages: 206 - 219
      Abstract: This paper introduces a communication system for the tiles of the heptagrid, a tiling of the hyperbolic plane. The paper focuses on a short account of an experiment obtained by running a simulation programme.
      Keywords: hyperbolic tilings; cellular automata; networks; applications; heptagrid; simulation; communications; message systems
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 206 - 219
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049545
      Issue No: Vol. 1, No. 2/3 (2012)
       
  • Flexibility study on telemetric vehicle emission examination
    • Authors: Pak Kin Wong; Chi Man Vong; Weng Fai Ip; Hang Cheong Wong
      Pages: 220 - 229
      Abstract: The current practice of gasoline engine emission examination is partially based on λ reading. For the λ value of a car over a specific standard, it indicates the car failed the examination. Although modern automobiles have built-in λ sensors to monitor the efficiency of the catalytic converter and can warn the driver when the converter breaks down, mandatory vehicle examination cannot be taken every day for each car. The concept of telemetry with traffic lights is proposed that allows λ data collected from the vehicle on road to be reported immediately at a traffic light. The data can be sent via a radio transmitter in the vehicle to a radio receiver mounted on the traffic light which is connected to a server. So, the authority can monitor the engine emissions via computer networks while the vehicles stop at red traffic lights. Experimental results show that the idea is feasible.
      Keywords: vehicle emissions; telemetry; wireless networks; communications; engine emissions; traffic lights; red lights; emissions monitoring
      Citation: International Journal of Satellite Communications Policy and Management, Vol. 1, No. 2/3 (2012) pp. 220 - 229
      PubDate: 2012-10-07T23:20:50-05:00
      DOI: 10.1504/IJSCPM.2012.049546
      Issue No: Vol. 1, No. 2/3 (2012)
       
 
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