On constructions for two dimensional balanced sampling plan excluding contiguous units with block size four

SummaryThis paper describes an investigation into yield variability and spatial correlations in 129 spring barley trials using small plots between 2·4 and 6·0 m2 in area. We report on the efficiencies of the generalized lattice designs used, and discuss the effects of plot size and year-to-year variations. Results indicate that the recommendations of Patterson & Hunter (1983) on choice of block size apply equally well to small-plot trials. The observed variability and correlations are then discussed and so is the potential for improvement by using alternative designs. Patterns of variability were not at all consistent from year to year, or even between trials in the same year, but it appears important to take account of column effects as well as row effects.

Download Full-text

TWO-DIMENSIONAL BALANCED SAMPLING PLANS EXCLUDING CONTIGUOUS UNITS

Drying Technology ◽

10.1081/drt-120006078 ◽

2002 ◽

Vol 31 (8) ◽

pp. 1441-1455

Author(s):

Darryn Bryant ◽

Yanxun Chang ◽

C. A. Rodger ◽

R. Wei

Keyword(s):

Two Dimensional ◽

Sampling Plans ◽

Balanced Sampling

Download Full-text

TWO-DIMENSIONAL BALANCED SAMPLING PLANS EXCLUDING CONTIGUOUS UNITS

Communication in Statistics- Theory and Methods ◽

10.1081/sta-120006078 ◽

2002 ◽

Vol 31 (8) ◽

pp. 1441-1455 ◽

Cited By ~ 16

Author(s):

Darryn Bryant ◽

Yanxun Chang ◽

C. A. Rodger ◽

R. Wei

Keyword(s):

Two Dimensional ◽

Sampling Plans ◽

Balanced Sampling

Download Full-text

Effects of finite-size joints on the deformability of jointed rock at the two-dimensional level

Canadian Geotechnical Journal ◽

10.1139/t94-044 ◽

1994 ◽

Vol 31 (3) ◽

pp. 364-374 ◽

Cited By ~ 13

Author(s):

Pinnaduwa H.S.W. Kulatilake ◽

Hasan Ucpirti ◽

Ove Stephansson

Keyword(s):

Constitutive Model ◽

Scale Effects ◽

Distinct Element ◽

Density Ratio ◽

Finite Size ◽

Block Size ◽

Jointed Rock ◽

Two Dimensional ◽

Joint Orientation ◽

Joint Geometry

A numerical decomposition technique, which has resulted from a linking between joint-geometry modeling and generation schemes, and a distinct element code (UDEC), is used to study the effect of joint-geometry parameters of finite-size joints on the deformability properties of jointed rock at the two-dimensional (2D) level. The influence of joint-geometry parameters such as joint density, ratio of joint size to block size, and joint orientation on the deformability of jointed rock is shown. Relations are established between deformability properties of jointed rock and fracture-tensor parameters. An incrementally linear elastic, anisotropic constitutive model is developed to represent the prefailure mechanical behaviour of jointed rock at the 2D level. This constitutive model has captured the anisotropic, scale-dependent behaviour of jointed rock. In this model, the effect of the joint-geometry network in the rock mass is incorporated in terms of fracture-tensor components. Some insight is given related to estimation of representative elementary volumes for deformability properties of jointed rock. Key words : rock masses, deformability, distinct element method, fracture tensor, anisotropy, scale effects.

Download Full-text

Two-dimensional balanced sampling plans excluding adjacent units under sharing a border and island adjacency schemes

Communications in Statistics - Simulation and Computation ◽

10.1080/03610918.2017.1291959 ◽

2017 ◽

Vol 47 (3) ◽

pp. 712-720 ◽

Cited By ~ 1

Author(s):

Pratheesh P Gopinath ◽

Rajender Parsad ◽

B. N. Mandal

Keyword(s):

Two Dimensional ◽

Sampling Plans ◽

Balanced Sampling

Download Full-text

Spectrophotometric measurements of objective-prism spectra

Symposium - International Astronomical Union ◽

10.1017/s007418090005333x ◽

1966 ◽

Vol 24 ◽

pp. 118-119

Author(s):

Th. Schmidt-Kaler

Keyword(s):

Progress Report ◽

Two Dimensional ◽

Objective Prism ◽

Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

Download Full-text

Introductory paper

Symposium - International Astronomical Union ◽

10.1017/s0074180900053031 ◽

1966 ◽

Vol 24 ◽

pp. 3-5

Author(s):

W. W. Morgan

Keyword(s):

Line Intensity ◽

Classification Scheme ◽

Two Dimensional ◽

Spectral Classification ◽

Dimensional Array ◽

Rr Lyrae ◽

Metallic Line ◽

Introductory Paper ◽

Parameter Varying ◽

Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

Download Full-text

A one-dimensional self-gravitating stellar gas

Symposium - International Astronomical Union ◽

10.1017/s0074180900105261 ◽

1966 ◽

Vol 25 ◽

pp. 46-48 ◽

Cited By ~ 2

Author(s):

M. Lecar

Keyword(s):

Gravitational Field ◽

Phase Space ◽

Motion Picture ◽

Space Distribution ◽

Two Dimensional ◽

One Dimensional ◽

Phase Space Distribution ◽

Dimensional Phase Space ◽

The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

Download Full-text