background and aims: nowadays miniscrews are widely used as skeletal anchorage in orthodontics. however the success rate of miniscrews is less than that of osseointegrated implants. the aim of this retrospective study was to evaluate factors influencing the success rate of orthodontic miniscrews. materials and methods: data of 244 miniscrews in 122 patients (99 females and 23 males, with a mean...

We introduce a method of detecting data series (curves) which exhibit pattern without knowing what kind of pattern they contain. By partitioning the space of curves into neighbourhoods, we show that the curves with the shortest addresses are the most likely to result from simple underlying mechanisms. We show that address reduction is a bound on Kolmogorov complexity and is invariant over noise...

The standard setting for competitive analysis of online algorithms assumes that on-line algorithm knows the past (but not future) inputs, and can optimize its performance by \learning" from mistakes of the past. This framework cannot capture some of the real-life online decision-making, which takes place without full knowledge of past and present inputs. Instead, online algorithm only knows a f...

Spectrum sensing is essential in cognitive radio. By defining leading eigenvector as feature, we introduce a blind feature learning algorithm (FLA) and a feature template matching (FTM) algorithm using learned feature for spectrum sensing. We implement both algorithms on Lyrtech software defined radio platform. Hardware experiment is performed to verify that feature can be learned blindly. We c...

Background/Aim: Difficult urethral catheterization (DUC) is a frequent urological emergency in daily practice. Anticoagulant and antiaggregant drugs, included the treatment protocols for COVID-19, tend to increase risk of possible complications alternative interventions, such as cystoscopy suprapubic percutaneous cystostomy. Therefore, less invasive method needed patients with DUC. This study a...

background: primary stability is an important factor for the clinical success of orthodontic mini-screws. the present study made an attempt to evaluate the effect of insertion angle changes on the maximum insertion and removal torque of orthodontic mini-screws. materials and methods: in this experimental study, 72 mini-screws (dual top anchor system, jeil, 1.6 mm diameter, 8 mm length) were use...