نتایج جستجو برای: orthogonal array designs

تعداد نتایج: 245641  

2017
Jennifer Seberry Mieko Yamada

New constructions for amicable orthogonal designs are given. These new designs then give new amicable Hadamard matrices and new skew-Hadamard matrices. In particular we show that if p is the order of normalized amicable Hadamard matrices there are normalized amicable Hadamard matrices of order (p 1)u + 1, u > 0 an odd integer. Tables are given for the existence of amicable and skew-Hadamard mat...

2014
Yuhui Yin Min-Qian Liu

Computer experiments are becoming increasingly popular in studying complex real world systems. A special class of sliced Latin hypercube design is proposed in this paper. Such designs are particularly suitable for computer experiments with both qualitative and quantitative factors, multi-fidelity computer experiments, cross-validation and data pooling. The resulting sliced Latin hypercube desig...

Journal: :IEEE Trans. Information Theory 2003
Xue-Bin Liang Xiang-Gen Xia

Orthogonal space–time block coding proposed recently by Alamouti [1] and Tarokh, Jafarkhani, and Calderbank [4] is a promising scheme for information transmission over Rayleigh-fading channels using multiple transmit antennas due to its favorable characteristics of having full transmit diversity and a decoupled maximum-likelihood (ML) decoding algorithm. Tarokh, Jafarkhani, and Calderbank exten...

2003
Mohammed Zafar Ali Khan B. Sundar Rajan Moon Ho Lee

Space-Time block codes (STBC) from Orthogonal Designs (OD), Quasi-Orthogonal Designs (QOD) and Co-ordinate Interleaved Orthogonal Designs (CIOD) have been attracting wider attention due to their amenability for fast (single-symbol decoding for OD, CIOD and double-symbol decoding for QOD) ML decoding, and rate-one with full-rank over quasi-static fading channels [1]-[13]. The importance of CIOD ...

Journal: :Australasian J. Combinatorics 2013
Tianbing Xia Jennifer Seberry Ming-Yuan Xia Shangli Zhang

In this paper we construct OD(4pq(q+1); pq, pq, pq, pq, pq, pq, pq, pq) for each core order q ≡ 3(mod 4), r ≥ 0 or q = 1, p odd, p ≤ 21 and p ∈ {25, 49}, and COD(2q(q + 1); q, q, q, q) for any prime power q ≡ 1(mod 4) (including q = 1), r ≥ 0.

Journal: :Australasian J. Combinatorics 2006
Masaaki Harada Hadi Kharaghani

In this study, Taguchi experimental design has been used for the optimization of thickness of chromium layers. For this purpose brass materials have been electroplated under various conditions of the process. An orthogonal array (OA) was employed to analyze the effect of plating parameters on the characteristic of the thickness. Variables which were considered for working were as following; amo...

Ehsan Bahiraee Sadigh Raissi

Control charts are extensively used in manufacturing contexts to monitor production processes. This article illustrates economical design of a variable sample size and control limit Hotelling’s T2 control chart based on a novel cost model when occurrence times of the assignable causes are exponentially distributed. The proposed nonlinear cost model is an extension of Duncan’s (J Am Stat ...

2011
Stela Zhelezova

The resolvability of combinatorial designs is intensively investigated because of its applications. This research focuses on resolvable designs with an additional property—they have resolutions which are mutually orthogonal. Such designs are called doubly resolvable. Their specific properties can be used in statistical and cryptographic applications. Therefore the classification of doubly resol...

Journal: :مهندسی سازه 0
حسن افشین علی اکبر بابالو افشین اجلالی

we use many kinds of combinations of raw materials and production levels in producing composite materials. testing all the states are difficult or even impossible. taguchi method is a numerical method which predicts optimum state of composite materials using special orthogonal arrays. in this research we have discussed useablity of this method and its’ potential in finding optimum mix design of...

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