Results 101 to 110 of about 67,338 (298)

Volatility analysis and forecasting of vegetable prices using an ARMA‐GARCH model: An application of the CF filter and seasonal adjustment method to Korean green onions

open access: yesAgribusiness, EarlyView.
Abstract The vegetable market experiences significant price fluctuations due to the complex interplay of trend, cyclical, seasonal, and irregular factors. This study takes Korean green onions as an example and employs the Christiano–Fitzgerald filter and the CensusX‐13 seasonal adjustment methods to decompose its price into four components: trend ...
Yiyang Qiao, Byeong‐il Ahn
wiley   +1 more source

The Relationship Between Interest Rates and Agricultural Commodity Price Dynamics

open access: yesAgribusiness, EarlyView.
ABSTRACT The U.S. Federal Reserve has undertaken several interest rate interventions in the past decade. This study explores the relationship between U.S. corn and soybean prices and Federal Reserve monetary policy interventions, in the short and long run.
Zhining Sun, Ani L. Katchova
wiley   +1 more source

The ?-invariant of hyperbolic 3-manifolds

open access: yesInventiones Mathematicae, 1985
The \(\eta\)-invariant introduced by \textit{M. F. Atiyah}, \textit{V. K. Patodi} and \textit{I. M. Singer}, Math. Proc. Camb. Philos. Soc. 77, 43-69 (1975; Zbl 0297.58008), is studied here for hyperbolic 3-manifolds; there is also given a representation for the first Pontryagin form of the Riemannian metric of a 4-dimensional compact oriented ...
openaire   +1 more source

QUASICONVEXITY OF BANDS IN HYPERBOLIC 3-MANIFOLDS [PDF]

open access: yesJournal of the Australian Mathematical Society, 2013
AbstractLet$M$be a complete hyperbolic 3-manifold homotopy equivalent to a compact surface$\Sigma $. Let$\Phi $be a proper subsurface of$\Sigma $, whose boundary is sufficiently short in$M$. We show that the union of all Margulis tubes and cusps homotopic into$\Phi $lifts to a uniformly quasiconvex subset of hyperbolic 3-space.
openaire   +1 more source

How Competitive Is Myanmar's Rice Sector? A Comparison of Production Costs and Efficiency

open access: yesAgribusiness, EarlyView.
ABSTRACT This paper analyzes the cost competitiveness of rice production in Myanmar by examining production costs, cost efficiency, and the potential effect of improving cost efficiency on the country's global competitiveness. To achieve this, we conduct a comparative analysis of production costs among major rice‐producing countries and estimate the ...
Nandar Aye Chan   +3 more
wiley   +1 more source

Food Tastes in the United States: Convergence or Divergence?

open access: yesAgribusiness, EarlyView.
ABSTRACT This study investigates how food consumption tastes have changed in recent decades across the United States. Using NielsenIQ data for over 77 million transactions, there is evidence of divergence in food tastes across regions from 2007 to 2016 and across households of different income, education, and race/ethnicity groups.
Michael DeDad
wiley   +1 more source

Geodesic knots in cusped hyperbolic 3–manifolds [PDF]

open access: yesAlgebraic & Geometric Topology, 2006
We consider the existence of simple closed geodesics or "geodesic knots" in finite volume orientable hyperbolic 3-manifolds. Previous results show that at least one geodesic knot always exists [Bull. London Math. Soc. 31(1) (1999) 81-86], and that certain arithmetic manifolds contain infinitely many geodesic knots [J. Diff. Geom.
openaire   +4 more sources

Hyperbolic three-manifolds that embed geodesically

open access: yes, 2016
We prove that every complete finite-volume hyperbolic 3-manifold $M$ that is tessellated into right-angled regular polyhedra (dodecahedra or ideal octahedra) embeds geodesically in a complete finite-volume connected orientable hyperbolic 4-manifold $W ...
Martelli, Bruno
core  

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