scholarly journals Frequency Squares and Affine Designs

10.37236/1534 ◽  
2000 ◽  
Vol 7 (1) ◽  
Author(s):  
V C Mavron

The known methods for constructing complete sets of mutually orthogonal frequency squares all yield one of two parameter sets. We show that almost all these constructions can be derived from one basic design theory construction.

1986 ◽  
Vol 29 (250) ◽  
pp. 1195-1203
Author(s):  
Teruo MARUYAMA ◽  
Shinya YAMAUCHI ◽  
Nobuo KAGOROKU

2017 ◽  
Vol 1 (1) ◽  
pp. 1-10
Author(s):  
I Nyoman Anom Fajaraditya Setiawan

Music has many lovers, especially in Bali there are many bands from various musical genres. In the development of indie music labels required hard work in creativity as supporting the popularity and success in the field of music. Faito 61, the band that existed from many hardcore bands of Bali maintained its existence with it so it is known among hardcore music fans from 2004-2010. Efforts to improve creativity and quality, Faito 61 released its first album as proof of maturity to fans and the community in addition to the creations of musicians that can generate and increase the band's popularity. It utilizes visual communication media as a supporting tool to maximize the album promo and this can also increase the popularity and sales of Faito 61 album. The existing media is so diverse that it needs to be selective and in accordance with theories, concepts and field conditions. For such provision it must begin with research and theoretical review. The hardcore concept is lifted according to the flow of the band. The design of Faito 61 album promo media, applied hardcore elements ranging from illustrations, typography and colors. Data obtained from direct interviews with direct observation media that has been owned so far then compared with design theory. Further analyzed qualitatively so that it can be concluded as the basic design.


Artifact ◽  
2008 ◽  
Vol 2 (1) ◽  
pp. 41-45 ◽  
Author(s):  
John Zimmerman ◽  
Jodi Forlizzi

2020 ◽  
pp. 1-16
Author(s):  
CLAYTON PETSCHE

We consider a certain two-parameter family of automorphisms of the affine plane over a complete, locally compact non-Archimedean field. Each of these automorphisms admits a chaotic attractor on which it is topologically conjugate to a full two-sided shift map, and the attractor supports a unit Borel measure which describes the distribution of the forward orbit of Haar-almost all points in the basin of attraction. We also compute the Hausdorff dimension of the attractor, which is non-integral.


2009 ◽  
Vol 20 (03) ◽  
pp. 501-522 ◽  
Author(s):  
CHRISTIAN GLAßER ◽  
ALAN L. SELMAN ◽  
LIYU ZHANG

We investigate the connection between propositional proof systems and their canonical pairs. It is known that simulations between propositional proof systems translate to reductions between their canonical pairs. We focus on the opposite direction and study the following questions. Q1: For which propositional proof systems f and g does the implication [Formula: see text] hold, and for which does it fail? Q2: For which propositional proof systems of different strengths are the canonical pairs equivalent? Q3: What do (non-)equivalent canonical pairs tell about the corresponding propositional proof systems? Q4: Is every NP-pair (A, B), where A is NP-complete, strongly many-one equivalent to the canonical pair of some propositional proof system? In short, we show that Q1 and Q2 can be answered with 'for almost all', which generalizes previous results by Pudlák and Beyersdorff. Regarding Q3, inequivalent canonical pairs tell that the propositional proof systems are not "very similar," while equivalent, P -inseparable canonical pairs tell that they are not "very different." We can relate Q4 to the open problem in structural complexity that asks whether unions of disjoint NP-complete sets are NP-complete. This demonstrates a new connection between propositional proof systems, disjoint NP-pairs, and unions of disjoint NP-complete sets.


2021 ◽  
Vol 233 ◽  
pp. 01076
Author(s):  
Jian Wang

As an important system for maintaining the respiration and safety of people on board, the oxygen system is widely used in modern civil aircraft. This paper provides a complete overview of the system design performance requirements, starting from the basic design theory of the civil aircraft oxygen system. It also analyzes the failure causes of the oxygen system from the perspective of test flight and operation, and provides some references for the analysis of the failure of the civil aircraft oxygen system and the debugging methods.


1997 ◽  
Vol 6 (1) ◽  
pp. 17-25 ◽  
Author(s):  
EDWARD A. BENDER ◽  
E. RODNEY CANFIELD ◽  
ZHICHENG GAO ◽  
L. BRUCE RICMOND
Keyword(s):  

Let [Mscr ]n,k(S) be the set of n-edge k-vertex rooted maps in some class on the surface S. Let P be a planar map in the class. We develop a method for showing that almost all maps in [Mscr ]n,k(S) contain many copies of P. One consequence of this is that almost all maps in [Mscr ]n,k(S) have no symmetries. The classes considered include c-connected maps (c [les ] 3) and certain families of degree restricted maps.


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