Results 71 to 80 of about 30,241 (197)
$^{12}$C/$^{13}$C ratio in planetary nebulae from the IUE archives [PDF]
, 2004 We investigated the abundance ratio of $^{12}$C/$^{13}$C in planetary nebulae by examining emission lines arising from \ion{C}{3} $2s2p ^3P_{2,1,0} \to 2s^2 ^1S_0$. Spectra were retrieved from the International Ultraviolet Explorer archives, and multiple
Abia C. +13 more
core +3 more sources
Sampling the volcanic plumes at Io: Impact speeds and shock conditions
Meteoritics &Planetary Science, EarlyView.Abstract The desire to sample material from the interior of Io, by flying through its volcanic plumes, requires consideration of the flyby speed and the types of sample collection techniques that can be utilized. Low speed collection (1–2.5 km s−1) would require an orbit around Io itself, which is unlikely due to the accumulated radiation dose that ...
M. J. Burchell +2 more
wiley +1 more source
Assesing efficiency of targeting in social services in Federation of Bosnia and Herzegovina
Croatian Review of Economic, Business and Social Statistics, 2020 This paper analyses the inefficiency of social services targeting in the Federation of Bosnia and Herzegovina (FB&H). Using official statistics microdata of the Household Budget Survey 2015, three models of social minimum in FB&H were constructed ...
Delalić Adela +3 more
doaj +1 more source
Filial piety matters: A study of intergenerational supports and parental health
SSM: Population Health, 2022 Eldercare has become a major challenge in China. As intergenerational support from children remains the primary source of caregiving, this paper investigates the impact of such support on parents' health outcomes.
Yang Li, Miao Guo
doaj +1 more source
Public Administration, EarlyView.ABSTRACT Regulatory instruments to manage the COVID‐19 pandemic have been the object of rich scholarly debates, primarily focused on early national responses to the crisis. We investigate variation in sub‐national regulatory approaches when a crisis is normalized, its association with competing political ideas about the health‐economy trade‐off and the
Salvador Parrado +3 more
wiley +1 more source
Studia Ekonomiczne i RegionalneThe subject of the study was corporate social responsibility (CSR) in small and medium-sized enterprises (SMEs) in Poland. In turn, the aim of the study was to identify the benefits and barriers associated with the introduction of CSR in SMEs and to ...
Apanel Adrian Paweł
doaj +1 more source
On the relation between the Einstein field equations and the Jacobi–Ricci–Bianchi system [PDF]
, 2013 The 1 + 3 covariant equations, embedded in an extended tetrad formalism and describing a spacetime with an arbitrary energy–momentum distribution, are reconsidered.
Van den Bergh, Norbert
core +2 more sources
School Science and Mathematics, EarlyView.Abstract To continue to support long‐term, ongoing science curriculum and instruction reform efforts in the United States, there is a significant need to be able to reliably measure teachers’ discourse‐rich, inquiry‐based instruction. In this external validation study, we present the Discourse in Inquiry Science Classrooms Version 2.0 (DiISC 2.0) as a ...
Elizabeth Lewis +6 more
wiley +1 more source
COVID-19 school closures and mental health of adolescent students: Evidence from rural Mozambique
SSM - Mental Health, 2023 The onset of the COVID-19 pandemic, entailing widespread school closures as well as acute disruptions to household livelihoods, had substantial consequences for adolescent well-being in low-income countries. We present novel evidence about the prevalence
Feliciano Chimbutane +4 more
doaj +1 more source
The Welfare Effects of Social Media
The American Economic Review, 2019 The rise of social media has provoked both optimism about potential societal benefits and concern about harms such as addiction, depression, and political polarization.
Hunt Allcott +3 more
semanticscholar +1 more source