Results 11 to 20 of about 520,305 (247)
Development of Precise Lunar Orbit Propagator and Lunar Polar Orbiter’s Lifetime Analysis [PDF]
Journal of Astronomy and Space Sciences, 2010 To prepare for a Korean lunar orbiter mission, a precise lunar orbit propagator; Yonsei precise lunar orbit propagator (YSPLOP) is developed. In the propagator, accelerations due to the Moon’s non-spherical gravity, the point masses of the Earth, Moon,
Young-Joo Song +3 more
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Emission Modes in Electrospray Thrusters Operating with High Conductivity Ionic Liquids
Aerospace, 2020 Electrospray thruster life and mission performance are strongly influenced by grid impingement, the extent of which can be correlated with emission modes that occur at steady-state extraction voltages, and thruster command transients.
Nolan M. Uchizono +6 more
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Estimating mean lifetime [PDF]
Proceedings of the National Academy of Sciences, 2003 The life expectancy implied by current age-specific mortality rates is calculated with life table methods that are among the oldest and most fundamental tools of demography. We demonstrate that these conventional estimates of period life expectancy are affected by an undesirable “tempo effect.” The tempo effect is positive when the mean age at death is
John, Bongaarts, Griffith, Feeney
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, 2014 Citation: 'lifetime' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.L03515 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
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Journal of Political Economy, 1977 This paper contrasts consumer choice under uncertain lifetimes with the behavior that would arise if each individual's lifetime were announced at birth. In a model that includes life insurance and excludes investments in human capital, the expected utility under uncertain lifetimes exceeds that under known lifetimes when the latter expectation is based
Barro, Robert, Friedman, James W.
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Nuclear Energy and Technology, 2015 Safe operation of the NPP main equipment whose design life has expired requires the development of new approaches to integrity diagnosis and monitoring due to high level of metal ageing.
M.B. Bakirov +3 more
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Lifetime costs and lifetime net public expenditures of smoking [PDF]
European Journal of Public Health, 2021 AbstractBackgroundCurrent estimates of lifetime costs of smoking are largely based on model analyses using etiologic fractions for a variety of diseases or Markov chain models. Direct estimation studies based on individual data for health costs by smoking status over a lifetime are non-existent.MethodsWe estimated lifetime costs in a societal ...
Rasmussen, Susanne R +2 more
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Overlapping Length and Lifetime Influence on Load of Simple Over-lapped Adhesive Bond [PDF]
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2011 A production process is various in single industrial branches; it usually has one common element – bonding pieces of material. We can say on the base of the production sphere analysis that simple overlapped adhesive bonds are the most common adhesive ...
Miroslav MÜLLER +2 more
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Data Transmission Reduction in Wireless Sensor Network for Spatial Event Detection
Sensors, 2021 Wireless sensor networks have found many applications in detecting events such as security threats, natural hazards, or technical malfunctions. An essential requirement for event detection systems is the long lifetime of battery-powered sensor nodes ...
Marcin Lewandowski, Bartłomiej Płaczek
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Physics Letters B, 1987 Abstract We present the final results on the D-meson liftime measurements obtained by the NA27 experiment. From a sample of 145 D 0 D 0 and 149 D ± decays, we have measured τ (D 0 )=(4.6 +0.6 −0.5 )×10 −13 s, τ (D ± )=(11.2 +1.4 −1.1 )×10 −13 s, with a ratio R= τ( D ± ) τ( D 0 ) =2.4±0.4 .
M. Aguilar Benitez +113 more
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