We propose a network access optimization for cognitive radio nodes aimed at throughput maximization under the constraint of primary node queue stability. To maintain primary queue stability, our approach moves beyond the traditional listen-before-talk opportunistic access by allowing cognitive radios to over-hear and utilize ACK/NAK feedback signals on packet reception from the primary receiver...

BACKGROUND Sufficient primary stability is a prerequisite for the clinical success of cementless implants. Therefore, it is important to have an estimation of the primary stability that can be achieved with new stem designs in a pre-clinical trial. Fast assessment of the primary stability is also useful in the preoperative planning of total hip replacements, and to an even larger extent in intr...

PURPOSE To monitor the development of stability of immediately loaded implants during early healing. MATERIALS AND METHODS A total of 90 interforaminally placed implants with an alkali-treated surface were considered. The stability of each implant was examined at placement and 1, 2, 3, 4, 5, 6, 8, and 10 weeks after the surgery using resonance frequency analysis (RFA) and damping capacity mea...

Banking system is considered as one of the most important economic sectors of every country. Because of the dependency between the performances of different sectors in economy, instability in banking sector will lead to disorder in all the other economic sectors. Marketization can influence banking stability. The primary objective of the present study is to investigate the relationship between ...

Primary implant stability is considered to be a critical factor for obtaining successful osseointegration [1]. Studies using Resonance Frequency Analysis (RFA) have demonstrated that initial implant stability is determined by the density of the bone, the surgical technique used, and the design of the implant [2, 3]. While different implant designs have shown similar results of higher stabilitie...

yield stability of 17 genotypes including eight of tritipyrum lines, five promising triticale lines and four iranian bread wheat varieties were studied in a randomized completely block design with three replications in seven environment during growing seasons of 2001-2002, 2002-2003, 2005-2006 and 2010-2011 in three locations. analysis of additive main effects and multiplicative interaction eff...

in this paper we introduce the notion of classical quasi-primary submodules that generalizes the concept of classical primary submodules. then, we investigate decomposition and minimal decomposition into classical quasi-primary submodules. in particular, existence and uniqueness of classical quasi-primary decompositions in finitely generated modules over noetherian rings are proved. moreover, w...

AIM To evaluate the primary and secondary stability of implants in the posterior maxilla. METHODS Patients were allocated into three groups: (A) native bone, (B) partially regenerated bone, and (C) nearly totally regenerated bone. Insertion torque (IT) and implant stability quotient (ISQ) were measured at placement, to evaluate whether satisfactory high primary stability (IT ≥ 45 N/cm; ISQ ≥ ...