Sixty moderately curved canals of mandibular molars classified as Vertucci’s type IV canal configuration were selected by micro-CT 1174. The teeth divided into two groups according to the kinematics used, whether reciprocating or rotary motion (n=30, totaling 60 mesial root canals). instruments used perform glide path procedures had identical features (0.15 mm tip size, 0.04 mm/mm taper, therma...

In an interactive functional programming environment with a Milner-style polymorphic type system (Milner 1978), a modification to one definition may imply changes in the types of other definitions. A polymorphic typechecker must carry out some re-typechecking to determine all of these changes. This paper presents a new typechecking algorithm which performs fine-grained re-typechecking based on ...

This paper reports an attempt to determine the segmentation of glides using existing knowledge about tonal alignment as reference. It is found that the likely onset of a glide is much earlier than what is acoustically the most obvious, i.e., the point where the formants reach their extremes. It is further found that there is indication that the point of formant extremes may in fact be the point...

Many bacteria glide smoothly on surfaces, despite having no discernable propulsive organelles on their surface. Recent experiments with Myxococcus xanthus and Flavobacterium johnsoniae show that both of these distantly related bacterial species glide using proteins that move in helical tracks, albeit with significantly different motility mechanisms. Both species utilize proton-motive force for ...

The Hong Kong Observatory (HKO) introduced a Doppler LIDAR to the Hong Kong International Airport (HKIA) in 2002, the first LIDAR for aviation alerting services in the world. Since then, HKO has developed a number of weather products based on the LIDAR’s velocity and backscatter power data. LIDAR is found to provide crucial information in a wide variety of aviation applications. This paper give...

A method is developed for generating landing footprints for entry vehicles in near realtime, as needed for an on-board flight management system. The method described in the paper is built around a previously developed, acceleration-based trajectory planner. The boundary of the footprint is constructed from the endpoints of extreme downrange or crossrange trajectories generated by the planner. T...