Results 11 to 20 of about 1,222,938 (291)

Long cycles, heavy cycles and cycle decompositions in digraphs [PDF]

open access: yesJournal of Combinatorial Theory, Series B, 2021
Haj s conjectured in 1968 that every Eulerian \(n\)-vertex graph can be decomposed into at most $\lfloor (n-1)/2\rfloor$ edge-disjoint cycles. This has been confirmed for some special graph classes, but the general case remains open. In a sequence of papers by Bienia and Meyniel (1986), Dean (1986), and Bollob s and Scott (1996) it was analogously ...
Knierim, Charlotte   +3 more
openaire   +2 more sources

MONEY CYCLES [PDF]

open access: yesInternational Economic Review, 2010
Operating overheads are widespread and lead to concentrated bursts of activity. To transfer resources between active and idle spells, agents demand financial assets. Futures contracts and lotteries are unsuitable, as they have substantial overheads of their own.
Clausen, Andrew, Strub, Carlo
openaire   +8 more sources

Monetary Cycles, Financial Cycles and the Business Cycle [PDF]

open access: yesSSRN Electronic Journal, 2010
One of the most robust stylized facts in macroeconomics is the forecasting power of the term spread for future real activity. The economic rationale for this forecasting power usually appeals to expectations of future interest rates, which affect the slope of the term structure.
Tobias Adrian   +2 more
openaire   +3 more sources

LIFE CYCLE OF PRODUCTS AND CYCLES [PDF]

open access: yesMacroeconomic Dynamics, 2010
The aim of this paper is to examine whether the development of waste recycling activities can be a source of economic fluctuations. We assume that the recycling sector has four fundamental characteristics. (i) The production factors are restricted by the production of the last period.
de Beir, Jean   +2 more
openaire   +5 more sources

SOLAR CYCLE 25: ANOTHER MODERATE CYCLE? [PDF]

open access: yesThe Astrophysical Journal Letters, 2016
ABSTRACT Surface flux transport simulations for the descending phase of Cycle 24 using random sources (emerging bipolar magnetic regions) with empirically determined scatter of their properties provide a prediction of the axial dipole moment during the upcoming activity minimum together with a realistic uncertainty range. The expectation
R. H. Cameron, J. Jiang, M. Schüssler
openaire   +3 more sources

Individual, social and physical environmental correlates of 'never' and 'always' cycling to school among 10 to 12 year old children living within a 3.0 km distance from school [PDF]

open access: yes, 2012
BACKGROUND: Cycling to school has been identified as an important target for increasing physical activity levels in children. However, knowledge about correlates of cycling to school is scarce as many studies did not make a distinction between walking ...
Cardon, Greet   +3 more
core   +2 more sources

Groundwater pollution risk evaluation of pharmaceuticals and personal care products in land application of sludge

open access: yesShuiwen dizhi gongcheng dizhi, 2023
In order to further clarify the groundwater pollution risk of the pharmaceutical and personal care products (PPCPs), also known as emerging organic contaminants, in land application of sludge, groundwater pollution risks of 29 PPCPs under sand and loam ...
Lin WU   +4 more
doaj   +1 more source

The physiological and mechanical demands of aerobics, indoor cycling, and netball in recreationally active females [PDF]

open access: yes, 2019
Background Group-based exercise is a popular method of improving fitness. However, limited research exists on the mul- tidisciplinary responses to group-based exercise. Aims The aim of this study was to compare the physiological and mechanical demands of
GREIG, MATT   +2 more
core   +2 more sources

Heterojunction formed via 3D-to-2D perovskite conversion for photostable wide-bandgap perovskite solar cells

open access: yesNature Communications, 2023
Light-induced halide segregation constrains the photovoltaic performance and stability of wide-bandgap perovskite solar cells and tandem cells. The implementation of an intermixed two-dimensional/three-dimensional heterostructure via solution post ...
Jin Wen   +11 more
doaj   +1 more source

Effect of thermal cycling frequency on the durability of Yb-Gd-Y-based thermal barrier coatings [PDF]

open access: yes, 2019
The effects of thermal cycling frequency and buffer layer on the crack generation and thermal fatigue behaviors of Yb–Gd–Y-stabilized zirconia (YGYZ)-based thermal barrier coatings (TBCs) were investigated through thermally graded mechanical fatigue ...
Choi, Baig-Gyu   +5 more
core   +1 more source

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