Results 71 to 80 of about 227,472 (209)

Counting dyadic equipartitions of the unit square

open access: yesDiscrete Mathematics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jeffrey C. Lagarias   +2 more
openaire   +2 more sources

Unit root cycles in the US unemployment rate [PDF]

open access: yes
The annual structure of the U.S. unemployment rate is examined in this article by means of new statistical techniques developed by Robinson (1994), which permit us to test unit root cycles in raw time series.
Shunsuke Managi
core  

(4-Methoxyphenyl)(4-propylcyclohexyl)methanone

open access: yesActa Crystallographica Section E, 2013
The asymmetric unit of the title compound, C17H24O2, contains two independent molecules with different conformations. The least-squares plane through the cyclohexane ring makes dihedral angles of 52.9 (5) and 81.4 (4)° with the benzene ...
Cheng-Min Li   +3 more
doaj   +1 more source

Tiling a unit square with 8 squares

open access: yes, 2011
Put n nonoverlapping squares inside the unit square. Let f(n) and g(n) denote the maximum values of the sum of the edge lengths of the n small squares, where in the case of f(n) the maximum is taken over all arbitrary packings of the unit square, and in the case of g(n) it is taken over all tilings of the unit square (i.e., the total area of the n ...
openaire   +2 more sources

Packing Unit Squares in Squares: A Survey and New Results

open access: yesThe Electronic Journal of Combinatorics, 2009
Let $s(n)$ be the side of the smallest square into which we can pack n unit squares. We present a history of this problem, and give the best known upper and lower bounds for $s(n)$ for $n\le100$, including the best known packings. We also give relatively simple proofs for the values of $s(n)$ when $n = 2$, 3, 5, 8, 15, 24, and 35, and more ...
openaire   +2 more sources

Bureaucratic compliance as a game on the unit square [PDF]

open access: yesPublic Choice, 1977
Already a fairly large body of literature has developed using Niskanen's theory as a starting point, showing how changes in Niskanen's assumptions can lead to a more realistic, yet still rigorous theory of bureaucratic behavior. This paper will review some of the more important elaborations of Niskanen's theory to date and suggest a still more ...
openaire   +3 more sources

Complete Sets of Sum-of-Squares Orthogonal F-Squares of Order N [PDF]

open access: yes, 2002
This issue was undated. The date given is an estimate.35 pages, 1 article*Complete Sets of Sum-of-Squares Orthogonal F-Squares of Order N* (Federer, Walter T.) 35 ...
Federer, Walter T.   +3 more
core  

2,6-Bis(prop-2-ynyloxy)naphthalene

open access: yesActa Crystallographica Section E, 2008
The title compound, C16H12O2, crystallizes with one half-molecule in the asymmetric unit. The molecule lies on an inversion centre, located at the mid-point of the naphthyl group.
Li Yao, Ruo-Jie Tao
doaj   +1 more source

The INVESTIGATION OF ASYMMETRIC DYNAMICS OF BORSA ISTANBUL INDEX WITH QUANTILE UNIT ROOT TEST

open access: yesApplied Finance Letters
In this study, we apply the quantile unit root test, which provides robust inferences for non-normal processes based on the quantile autoregression approach, to examine the asymmetric dynamic process of the BIST100 Borsa Istanbul index.
Müge Özdemir
doaj   +1 more source

5-Ethoxy-1,3,4-thiadiazole-2(3H)-thione

open access: yesActa Crystallographica Section E, 2012
In the title compound, C4H6N2OS2, the dihedral angle between the five-membered heterocyclic ring and the plane of the ethoxy group is 4.9 (2)°. The 1,3,4-thiadiazole-2-thione unit is planar, with an r.m.s. deviation of 0.011 &
Sung Kwon Kang   +2 more
doaj   +1 more source

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