Results 81 to 90 of about 11,071 (216)
New Results From the Pre‐Pottery Neolithic Site of Al Uyaynah, Tabuk, in Northwestern Saudi Arabia
Arabian Archaeology and Epigraphy, EarlyView.ABSTRACT Al Uyaynah is a low sandstone mound on an alluvial plain, long known for its extensive surface remains of stone‐built circular and rectangular structures. Following test excavations in 2012, more detailed excavation was undertaken in 2016 within one of the largest rectangular stone structures.
Khalid Alasmari +6 more
wiley +1 more source
Size Ramsey numbers involving stars
, 1983 We calculate some size Ramsey numbers involving stars. For example we prove that for t ⩾ k ⩾ 2 and n sufficiently large the size Ramsey number. rn(K1,kK t+Kn=k(t−1)+12+(k(t−1)+1)(n+k−1)
Faudree, R.J., Sheehan, J.
core +1 more source
Field‐level crop choice responses to weather‐induced yield shocks in the US Corn Belt
American Journal of Agricultural Economics, EarlyView.Abstract As climate change increases the frequency and severity of extreme heat events, farmers are expected to face greater variability in crop yields. Using 10 million field‐level observations, this study examines how farmers in the US Corn Belt adjust corn–soybean rotation decisions in response to yield shocks largely driven by weather fluctuations.
Seunghyun Lee
wiley +1 more source
Ramsey numbers of ordered graphs
An ordered graph is a pair G = (G,
Kral, Karel +3 more
core +1 more source
Theories of Interest and Their Relation to the Gesell–Keynes Theory
The American Journal of Economics and Sociology, EarlyView.ABSTRACT We consider theories of interest as they relate to what we will call the Gesell‐Keynes (GK) theory which is essentially a real theory of capital accumulation with a monetary constraint that arises because of a liquidity return on holding money.
Ahmed Anwar
wiley +1 more source
An easy upper bound for Ramsey numbers
, 2012 This paper contains no new results but presents a slight simplification of the standard proof by Erdos-Szekeres for Ramsey numbers. The main tool is a new (to my knowledge) variation of Ramsey numbers which is perhaps of independent interest.We prove ...
Bacher, Roland
core
Planar Ramsey numbers for cycles
, 2008 For two given graphs G and H the planar Ramsey number PR(G,H) is the smallest integer n such that every planar graph F on n vertices either contains a copy of G or its complement contains a copy H.
Gorgol, Izolda, Ruciński, Andrzej
core +1 more source
Archaeometry, EarlyView.Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather +11 more
wiley +1 more source
Computing and estimating ordered Ramsey numbers
, 2020 We study ordered Ramsey numbers, which are an analogue of the classical Ramsey numbers for ordered graphs. We improve some already obtained results for a special class of ordered matchings and disprove a conjecture of Rohatgi.
Poljak, Marian
core
Archaeometry, EarlyView.ABSTRACT Ten timbers from the spire scaffold of Salisbury Cathedral were dated using a combination of ring‐width dendrochronology, stable oxygen isotopic dendrochronology and radiocarbon dating. Seven timbers were coeval and assigned a combined empirical felling date range of 1352–1378, which was further refined to 1351–1359 (OxCal 95.4%).
Kutsi D. Akcicek +5 more
wiley +1 more source