Results 71 to 80 of about 120,854 (286)

Product or Production: On the accumulative Aspect of Rock Art at Nämforsen, Northern Sweden

open access: yesCurrent Swedish Archaeology, 2010
In this article the accumulative aspect of rock art is dis- cussed. In light of the simple fact that we are seeing rock art panels in their final form, questions concerning the interrelation between figures deriving from differ- ent time periods are ...
Ylva Sjöstrand
doaj   +1 more source

An Improved Annual Chronology of U.S. Business Cycles since the 1790's [PDF]

open access: yes
The NBER's pre-WWI chronology of annual peaks and troughs has the remarkable implication that the U.S. economy spent nearly every other year in recession, although previous research has argued that the post-Civil War dates are flawed.
Joseph H. Davis
core  

Review of Inorganic Separator Engineering for Next‐Generation Lithium–Sulfur Batteries: Compromise or Cornerstone?

open access: yesAdvanced Materials, EarlyView.
Inorganic compound‐modified separators transform lithium–sulfur batteries from passive polysulfide confinement to active reaction‐pathway regulation. A Practical Relevance Index (PRI)‐guided framework bridges interfacial chemistry of inorganic separators with practical constraints, establishing unified design principles for scalable, high‐energy ...
Yuting Qin   +7 more
wiley   +1 more source

The beginnings of S-shaped temple rings in Bohemia from the perspective of archaeological analysis and radiocarbon dating

open access: yesArcheologické Rozhledy
Jewellery represents important evidence not only for the reconstruction of fashion and cultural development but also provides significant support for the chronology of the periods studied.
Nikola Koštová   +3 more
doaj   +1 more source

The uses of a chronology: a guide for students [PDF]

open access: yes, 2017
Whatever topic or issue you wish to study there is only one way of starting – with a chronology. Once you draw up a chronology and reflect upon it, that mental block you may have will vanish.
Hayes, Dennis, Browne, Liz
core  

Understanding Operando Water Management in Hydroxide‐Exchange‐Membrane Fuel Cells

open access: yesAdvanced Materials Interfaces, EarlyView.
Effective water management is vital for high‐performance hydroxide‐exchange‐membrane fuel cells. Using a custom water‐flux station, this study quantifies how membrane thickness, microporous layers, and operating conditions dictate internal water transport.
Catherine M. Weiss   +4 more
wiley   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang   +14 more
wiley   +1 more source

Metalware hoards of the Bronze Age from Crimea and Taman

open access: yesАрхеология евразийских степей
The paper deals with the analysis of metalware hoards of the Bronze Age, found in Crimea and Taman. At the moment, more than 20 of them are known. They are dated to the Middle and Late Bronze Ages (III–II millennia BC).
Vadim S. Bochkarev   +2 more
doaj   +1 more source

On Neolithic Pottery Technologies in the Lower Kama Region and the Time of Ancient Ceramic Traditions Expansion

open access: yesПоволжская археология, 2013
The results of typological and technological analysis and radiocarbon dating of the Neolithic ceramics in the Lower Kama region are presented in the article. The study was aimed at clarifying a number of issues related to the relationship and interaction
Vybornov Aleksandr A.
doaj   +1 more source

Intelligent Maintenance Review for Robots: Multimodal Information, Deep Diagnosis and Embodied Artificial Intelligence

open access: yesAdvanced Robotics Research, EarlyView.
This review maps the methods to monitor robots’ health by fusing vibration, sound, control signals, vision, force, and oil information with artificial intelligence. It identifies deep learning, transfer learning, digital twins, and physics‐informed models as key methodological pathways enabling earlier diagnosis, safer human–robot collaboration, and ...
Yuting Qiao   +6 more
wiley   +1 more source

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