Results 31 to 40 of about 7,358 (155)

From Earth to Orbit: An assessment of transportation options [PDF]

open access: yes
The report assesses the requirements, benefits, technological feasibility, and roles of Earth-to-Orbit transportation systems and options that could be developed in support of future national space programs.
Blond, Edmund   +9 more
core   +1 more source

Forward bearing reactor mechanism for Titan 3-E/Centaur D-1T space launch vehicle [PDF]

open access: yes, 1975
System between the Titan/Centaur launch vehicle and its aerodynamic shroud is described. The system provides a precise spring constant and is capable of being inactivated during flight.
Jones, R. A.
core   +1 more source

Unbundling the Grid: Renewable Capital and the Demise of Electricity as a ‘Public Utility’ in the United States

open access: yesDevelopment and Change, Volume 56, Issue 4-5, Page 982-1006, July-September 2025.
ABSTRACT One might think that renewable energies such as solar and wind are flow resources that are conducive to public ownership, but the vast majority of these renewables projects are privately owned. What explains this apparent paradox? This article focuses on the unique case of electricity in the United States to argue that renewable capital must ...
Matthew T. Huber
wiley   +1 more source

“Not Everyone Can Become a Rocket Scientist”: Decolonising Children’s Rights in Ethnic Minority Childhoods in Norway

open access: yesThe social science
This paper uses a case study to critically reflect on contemporary discourses in Norway connected to ethnic minority childhoods and children’s rights to education and work. Based on a narrative interview with an ethnic minority girl, Sadja (aged 16), who
Marit Ursin, I. Lyså
semanticscholar   +1 more source

Elements of cost comparison for planetary missions with advanced propulsion [PDF]

open access: yes
Cost and performance comparisons are made between chemical propulsion and nuclear electric propulsion for planetary missions at Jupiter and beyond. Nuclear rocket comparisons are made for performance only.
Stearns, J. W.
core   +1 more source

Well-Centered Triangulation [PDF]

open access: yes, 2008
Meshes composed of well-centered simplices have nice orthogonal dual meshes (the dual Voronoi diagram). This is useful for certain numerical algorithms that prefer such primal-dual mesh pairs.
Guoy, Damrong   +3 more
core   +3 more sources

Selective sampling of asteroids, the Moon, and Mars: Factors affecting the numerical abundances of members of meteorite groups

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 7, Page 1502-1519, July 2025.
Abstract Meteorite collection inventories show that many related meteorite groups have very different numerical abundances (e.g., lunar versus Martian meteorites; Eagle Station pallasites versus main‐group pallasites; eucrites versus diogenites; ungrouped Antarctic irons versus ungrouped non‐Antarctic irons; carbonaceous chondrite‐related (CC) iron ...
Alan E. Rubin
wiley   +1 more source

Next generation earth-to-orbit space transportation systems: Unmanned vehicles and liquid/hybrid boosters [PDF]

open access: yes
The United States civil space effort when viewed from a launch vehicle perspective tends to categorize into pre-Shuttle and Shuttle eras. The pre-Shuttle era consisted of expendable launch vehicles where a broad set of capabilities were matured in a ...
Hueter, Uwe
core   +1 more source

Lessons from the Syria‐Hezbollah Criminal Syndicate, 1985–2005

open access: yesMiddle East Policy, Volume 32, Issue 2, Page 98-119, Summer 2025.
Abstract Hezbollah, founded with the intention of destroying Israel, has long engaged in illicit efforts to amass resources the size of some states’ coffers. The Lebanese group's long‐running global criminal syndicate with the Assad regime, initially forged in the 1980s, more recently allowed it to fight for more than a decade in the Syrian conflict ...
Iftah Burman, Yehuda Blanga
wiley   +1 more source

TELEHEALTH and digital health platforms in promoting access to sexual reproductive health self care among youth: A case of rocket health services in Uganda

open access: yesmedRxiv
Background:: Sexual Reproductive Health (SRH) self-care offers a pathway for low income countries to advance towards Universal Health Coverage by empowering individuals, families, and communities to prioritize their SRH needs independently of healthcare ...
Vincent Ssenfuka   +5 more
semanticscholar   +1 more source

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