Results 161 to 170 of about 63,583 (308)

Environmental Loss Characterization of an Advanced Stirling Convertor (ASC-E2) Insulation Package Using a Mock Heater Head [PDF]

open access: yes
The U.S. Department of Energy (DOE) and Lockheed Martin Space Systems Company (LMSSC) have been developing the Advanced Stirling Radioisotope Generator (ASRG) for use as a power system for space science missions.
Briggs, Maxwell H., Schifer, Nicholas A.
core   +1 more source

Adaptable livelihoods and the persistence of pastoralism: A longitudinal study of pastoral livelihood transformation in northern Kenya, Isiolo

open access: yesDevelopment Policy Review, Volume 44, Issue 1, January 2026.
Abstract Motivation Strong narratives claiming the end of pastoralism due to highly variable social and economic turbulence arising from climate‐induced crises, conflict, and social exclusion exist in development spaces, yet pastoralism persists. Addressing these crises in pastoral areas has often been static, short‐term, and blind to changes in ...
Tahira Mohamed
wiley   +1 more source

A 1987 overview of free-piston Stirling technology for space power application [PDF]

open access: yes
An overview is presented of the NASA Lewis Research Center free-piston Stirling engine activities directed toward space-power application. NASA Lewis serves as the project office to manage the newly initiated NASA SP-100 Advanced Technology Program.
Alger, Donald L., Slaby, Jack G.
core   +1 more source

Localized and Transient Oxygenation of Shallow Oceans of Southwestern Laurentia at the Ediacaran–Cambrian Boundary

open access: yesGeobiology, Volume 24, Issue 1, January/February 2026.
ABSTRACT The Ediacaran–Cambrian boundary, which precedes one of the most significant biotic diversification events in Earth's history, is associated with a global negative carbon isotope excursion termed the BAsal Cambrian carbon isotope Excursion (BACE).
Watsawan Chanchai   +6 more
wiley   +1 more source

Recent Stirling Conversion Technology Developments and Operational Measurements at NASA Glenn Research Center [PDF]

open access: yes
In support of the Advanced Stirling Radioisotope Generator (ASRG) project and other potential applications, NASA Glenn Research Center (GRC) has initiated convertor technology development efforts in the areas of acoustic emission, electromagnetic field ...
Oriti, Salvatore M.   +1 more
core   +1 more source

SCADDA: Spatiotemporal Cluster Analysis With Density‐Based Distance Augmentation and Its Application to Fire Carbon Emissions

open access: yesGeographical Analysis, Volume 58, Issue 1, January 2026.
ABSTRACT Spatiotemporal clustering occupies an established role in various fields dealing with geospatial analysis, spanning from healthcare analysis to environmental science. One major challenge is application in which cluster assignments are dependent on local densities, meaning that higher‐density areas should be treated more strictly for spatial ...
Ben Moews, Antonia Gieschen
wiley   +1 more source

A Determinant of Stirling Cycle Numbers Counts Unlabeled Acyclic Single-Source Automata

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2008
We show that a determinant of Stirling cycle numbers counts unlabeled acyclic single-source automata. The proof involves a bijection from these automata to certain marked lattice paths and a sign-reversing involution to evaluate the determinant.
David Callan
doaj  

Breeding and foraging habitat are important in determining foraging ranges of sympatric generalist species

open access: yesIbis, Volume 168, Issue 1, Page 259-292, January 2026.
How far animals travel to gather food for offspring or themselves is a central component of ecology. Among birds, the ‘foraging range’ (straight‐line distance between a central place and a destination) is used to assess potential interactions with anthropogenic stressors such as wind farms.
Chris B. Thaxter   +15 more
wiley   +1 more source

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