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2017 ◽  
Vol 16 (2) ◽  
Author(s):  
Wael Mohamed ◽  
Rozita Hassan ◽  
Shaifulizan Ab. Rahman

Introduction: Duration of treatment is one of the things orthodontic patients complaint about most and challenging orthodontist to shorten treatment time. A new surgical technique was introduced to accelerate tooth movement during orthodontic treatment through combining surgical and orthodontic treatment by doing surgical reduction of the bone mass in the path of desired tooth movement prior to start orthodontic alignment of the teeth. This case report showed treatment of 21 years old male patient complaint of teeth malalignment and he requested to finish treatment in short time. Upper right first premolar and lower left second premolar were extracted, all the bones in the desired path of tooth movement was removed and the dentoalveolar distraction procedure was performed using Nickel Titanium closing coil spring and power chain. Complete teeth alignment was achieved in two months period and the anchorage teeth were able to withstand the retraction forces with minimal anchorage loss.



Filomat ◽  
2015 ◽  
Vol 29 (9) ◽  
pp. 1919-1923 ◽  
Author(s):  
Milos Kurilic ◽  
Petar Markovic

If ?R,E? is the Rado graph andR(R) the set of its copies inside R, then ?R(R), ?? is a chain-complete and non-atomic partial order of the size 2x0 . A family A ? R(R) is a maximal antichain in this partial order iff (1) A ? B does not contain a copy of R, for each different A, B ?A and (2) For each S ? R(R) there is A ? A such that A ? S contains a copy of R. We show that the partial order ?R(R), ?? contains maximal antichains of size 2x0, X0 and n, for each positive integer n (thus, of all possible cardinalities, under CH). The results are compared with the corresponding known results concerning the partial order ?[?]?, ??.



2014 ◽  
Vol 651-653 ◽  
pp. 932-935
Author(s):  
Su Ying Xu

the exhaust turbine supercharger in the process of manufacturing is made up of many enterprises to participate in the production and management. Production organization form of the differences is determined by the scale of production and mode of operation. Parts of casting blank and parts processing has formed a complete industrial chain. Complete parts processing and manufacturing industry chain has failed to form the advantage of the products. Many companies, management can not meet the user's demand. Also can't satisfy the hosts, scale and qualification requirements of production enterprises. Enterprise management has been formed a consortium. Enterprise production scale and qualification of such as to meet the requirement of enterprises for internal combustion engine accessories. The manufacture of parts and exhaust turbocharger parts processing and assembly in production process can be controlled. Is helpful to the enterprise's development and improvement of product quality.



2014 ◽  
Vol 22 (1) ◽  
pp. 1-10
Author(s):  
Kazuhisa Ishida ◽  
Yasunari Shidama ◽  
Adam Grabowski

Summary This text includes the definition and basic notions of product of posets, chain-complete and flat posets, flattening operation, and the existence theorems of recursive call using the flattening operator. First part of the article, devoted to product and flat posets has a purely mathematical quality. Definition 3 allows to construct a flat poset from arbitrary non-empty set [12] in order to provide formal apparatus which eanbles to work with recursive calls within the Mizar langauge. To achieve this we extensively use technical Mizar functors like BaseFunc or RecFunc. The remaining part builds the background for information engineering approach for lists, namely recursive call for posets [21].We formalized some facts from Chapter 8 of this book as an introduction to the next two sections where we concentrate on binary product of posets rather than on a more general case.



2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Jinlu Li ◽  
Ying Liu ◽  
Hongya Gao

We apply the extensions of the Abian-Brown fixed point theorem for set-valued mappings on chain-complete posets to examine the existence of generalized and extended saddle points of bifunctions defined on posets. We also study the generalized and extended equilibrium problems and the solvability of ordered variational inequalities on posets, which are equipped with a partial order relation and have neither an algebraic structure nor a topological structure.



Author(s):  
ANDREJ BAUER ◽  
PETER LEFANU LUMSDAINE

AbstractThe Bourbaki–Witt principle states that any progressive map on a chain-complete poset has a fixed point above every point. It is provable classically, but not intuitionistically.We study this and related principles in an intuitionistic setting. Among other things, we show that Bourbaki–Witt fails exactly when the trichotomous ordinals form a set, but does not imply that fixed points can always be found by transfinite iteration. Meanwhile, on the side of models, we see that the principle fails in realisability toposes, and does not hold in the free topos, but does hold in all cocomplete toposes.



2010 ◽  
Vol 18 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Kazuhisa Ishida ◽  
Yasunari Shidama

Fixpoint Theorem for Continuous Functions on Chain-Complete PosetsThis text includes the definition of chain-complete poset, fix-point theorem on it, and the definition of the function space of continuous functions on chain-complete posets [10].



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