Search results for "FIX"
showing 10 items of 1335 documents
Licensing policies for a new product
2005
This paper studies licensing policies for the owner of a new product and addresses their welfare impact in the assessment of market failures. We show that the best licensing policy for the patent holder is fixed fee licensing with an exclusive territory clause. Consumers are also better off with fixed fees but do not prefer the exclusive territory clause. Social welfare is higher under exclusive territories when fixed costs are not too large. As for efficiency, the number of licences in the private market equilibrium falls short of the socially optimal solution. Our analysis discloses that (i) any policy measures aimed at enhancing the diffusion of technology, in terms of the number of lice…
Real class sizes and real character degrees
2010
Perhaps unexpectedly, there is a rich and deep connection between field of values of characters, their degrees and the structure of a finite group. Some of the fundamental results on the degrees of characters of finite groups, as the Ito–Michler and Thompson's theorems, admit a version involving only characters with certain fixed field of values ([DNT, NS, NST2, NT1, NT3]).
New Fixed Points Theorems
MR2595826 (2011c:46026) Domínguez Benavides, T. The Szlenk index and the fixed point property under renorming. Fixed Point Theory Appl. 2010, Art. ID…
2010
It is known that not every Banach space can be renormed so that the resultant space satisfies the weak Fixed Point Property (w-FPP). In the paper under review the author gives a further contribution to identify classes of Banach spaces which can be renormed to satisfy the w-FPP. Let $X$ be a Banach space and $X^*$ its dual. The dual norm is $UKK^*$ if for every $\varepsilon >0$ there is $\theta(\varepsilon)>0$ such that every $u$ in the closed unit ball $B_{X^*}$ of $X^*$ with $\|u\| > 1 - \theta(\varepsilon)$ has a weak$^*$ open neighborhood $\mathcal{U}$ with diam$(B_{X^*}\cap\mathcal{U})< \epsilon$. In [Bull. Lond. Math. Soc. 42 (2010), no. 2, 221--228; MR2601548] M. Raya showed that if …
Recensione: MR2826706 Abbas, Mujahid; Hussain, Nawab; Rhoades, Billy E. Coincidence point theorems for multivalued f -weak contraction mappings and a…
2012
Fixed point theorems for $\alpha$-$\psi$-contractive type mappings
2012
In this paper, we introduce a new concept of $\alpha$-$\psi$-contractive type mappings and establish fixed point theorems for such mappings in complete metric spaces. Starting from the Banach contraction principle, the presented theorems extend, generalize and improve many existing results in the literature. Moreover, some examples and applications to ordinary differential equations are given here to illustrate the usability of the obtained results.
Nonlinear psi-quasi-contractions of Ciric-type in partial metric spaces
2012
In this paper we obtain results of fixed and common fixed points for self-mappings satisfying a nonlinear contractive condition of Ciric-type in the framework of partial metric spaces. We also prove results of fixed point for self-mappings satisfying an ordered nonlinear contractive condition in the setting of ordered partial metric spaces.
Generalization of the Den Hartog model and rule-of-thumb formulas for optimal tuned mass dampers
2022
In recent years, the need of improving safety standards for both existing and new buildings against earthquake and wind loads has created a growing interest in the use of the so-called tuned mass dampers, exploited to control, in active or passive way, the dynamic response of structures. To design and optimize tuned mass damper systems, the effective analytical procedure proposed by Den Hartog in his seminal work (Den Hartog, 1985) has been widely adopted over the years, without including damping of the main structure. However, in many cases of engineering interest, the damping of the primary system plays a key role in the overall mechanical response, with the result of an increase in compl…
The importance of correct implants positioning and masticatory load direction on a fixed prosthesis
2018
Background Through the biomechanical study of dental implants, it is possible to understand the dissipation effects of masticatory loads in different situations and prevent the longevity of osseointegration. Aims: To evaluate the microstrains generated around external hexagon implants, using axial and non-axial loads in a fixed four-element prosthesis with straight implants and implants inclined at 17°. Material and Methods Three implants were modeled using CAD software following the manufacturer's measurements. Then, implants were duplicated and divided into two groups: one with straight implants and respective abutments, and the other with angled implants at 17° and respective abutments. …
Zirconia in fixed prosthesis. A literature review
2014
Statement of problem: Evidence is limited on the efficacy of zirconia-based fixed dental prostheses. Objective: To carry out a literature review of the behavior of zirconium oxide dental restorations. Material and Methods: This literature review searched the Pubmed, Scopus, Medline and Cochrane Library databases using key search words “zirconium oxide,” “zirconia,” “non-metal restorations,” “ceramic oxides,” “veneering ceramic,” “zirconia-based fixed dental prostheses”. Both in vivo and in vitro studies into zirconia-based prosthodontic restoration behavior were included. Results: Clinical studies have revealed a high rate of fracture for porcelain-veneered zirconia-based restorations that …