In modern orthodontics, aesthetics appear to have a decisive influence on orthodontic appliance preferences and acceptability. This paper reports the early application of a newly emerged functional device with enhanced aesthetics in a Class II treatment. Patient perspectives and technical considerations are discussed along with recommendations for further design development. It can be assumed t...

Hash functions are used to generate a short form of an original message of any size. This short form is called a hash of a message or a message digest and is used in many cryptographic applications including message integrity verification and message authentication, in which case a keyed hash function is used. Hash function h operates on a message m of an arbitrary length. The result is a hash ...

This paper considers the problem of estimating the parameters of chirp signals with randomly time-varying amplitude. Two methods for solving this problem are presented. First, a nonlinear least-squares approach (NLS) is proposed. It is shown that by minimizing the NLS criterion with respect to all samples of the time-varying amplitude, the problem reduces to a two-dimensional maximization probl...

Over the last decade, interest in spin-$1/2$ Heisenberg antiferromagnet (HAF) on square kagome (also called shuriken) lattice has been growing as a model system of quantum magnetism with paramagnetic ground state, flat-band physics near saturation field, and scars. A further motivation to study this comes from recent discovery gapless spin liquid magnet $\mathrm{K}{\mathrm{Cu}}_{6}\mathrm{Al}\m...

To open up a 1-microm waveband for photonic transport systems, we developed a hybrid and harmonically mode-locked semiconductor laser (MLL) that can transmit return-to-zero (RZ) optical signals at data rates on the order of gigabits per second. A single-mode hole-assisted fiber (HAF) was also developed for use as a 1-microm waveband signal transmission line. A stable optical pulse train with a ...

Parameter estimation and performance analysis issues are studied for multicomponent polynomial-phase signals (PPS’s) embedded in white Gaussian noise. Identifiability issues arising with existing approaches are described first when dealing with multicomponent PPS having the same highest order phase coefficients. This situation is encountered in applications such as synthetic aperture radar imag...

The Australian Federal government has recently completed a two-year review into the safety, effectiveness and cost-effectiveness of positron emission tomography (PET). The review process, which included a thorough critique of the current literature as well as consultation with experts in the field, has led to extended public funding of PET within Australia. A further positive outcome is a freel...

A new video-speed, current-mode, CMOS, sample-andhold circuit haF been developed. It operates with a supply voltage as low as 1.5 V and a signal-to-noise ratio (SIN) of 57 dB and 54 dB at clock frequencies of 20 MHz and 30 MHz. It consists of current mirror circuits with an analog switch and a capacitor placed in differential fonn to achieve high accuracy without being affected by the switch fe...

This paper presents a novel approach to clearing a table with a heap of objects. Form, size, position, orientation and constellation of the objects are a priori unknown. Coping with incomplete point cloud data is an additional challenge. There are three key contributions. First, we introduce Height Accumulated Features (HAF) which provide an efficient way of calculating grasp related feature va...