ballast as a part of the railway system plays an important role in the operation of the railways and also has a great impact on repair and maintenance activities. hence most of the repair and maintenance activities in traditional railway systems are due to the defections in the ballast layer and therefore most of the maintenance budget is spent on repairing these defects. these repair and maint...

Motor proteins display widely different stepping patterns as they move on microtubule tracks, from the deterministic linear or helical motion performed by the protein kinesin to the uncoordinated random steps made by dynein. How these different strategies produce an efficient navigation system needed to ensure correct cellular functioning is still unclear. Here, we show by numerical simulations...

As an object moves through space, it creates a track (or path) representing the object’s past and present position and associated attributes. If data capture fails, then positions along the tracks are unknown. The particular problem we address in this paper is to create tracks of moving objects with missing data. We implement and test two techniques that create continuous tracks of two primate ...

CONTEXT The Q-Tracks program, created in 1999, is a quality monitoring subscription service offered by the College of American Pathologists. OBJECTIVE To establish benchmarks in quality metrics, monitor changes in performance over time, and identify practice characteristics associated with better performance. DESIGN The Q-Tracks program provides ongoing study of multiple metrics offered in ...

Cities in North America have been building bicycle infrastructure, in particular cycle tracks, with the intention of promoting urban cycling and improving cyclist safety. These facilities have been built and expanded but very little research has been done to investigate the safety impacts of cycle tracks, in particular at intersections, where cyclists interact with turning motor-vehicles. Some ...

Studies on the effects of off-road driving on soils were conducted in the Makuleke Contractual Park of the Kruger National Park. The studies were conducted on three different soils with different textures and soil compactibilities. Traffic pressure was applied with a game drive vehicle loaded with 11 sand bags, each weighing 70 kg. This gave a total vehicle mass of 3,795 kg, simulating a vehicl...

A new ichnospecies of a large theropod dinosaur, Megalosauripus transjuranicus, is described from the Reuchenette Formation (Early-Late Kimmeridgian, Late Jurassic) of NW Switzerland. It is based on very well-preserved and morphologically-distinct tracks (impressions) and several trackways, including different preservational types from different tracksites and horizons. All trackways were excav...

We expanded the AI track to include applied game theory, on the principle that applied game theory is usually more like AI than CS theory. The track system represents a compromise. The expansion of the AI track helped more explicitly align the track with an area at the interface of economics and computation, and have the SPC dedicated to this track consist of a mix of computer scientists and ec...

1 Introduction Sometimes a solution to a mathematical problem is so beautiful that it can impede further progress for a whole century. So is the case with the Killing-Cartan classification of semi-simple Lie algebras [Killing 1888; Cartan 1952]. It is elegant, it is beautiful, and it says that the 3 classical families and 5 exceptional algebras are all there is, but what does that mean? The con...

I was interested in the distribution of “non-trophic cutaneous ulcers” shown on the knuckles and dorsal foot in the case report of a 44-year-old female with multibacillary Hansen’s disease or leprosy. The case had glove stocking sensory and motor neuropathy and histopathology characteristics of multibacillary Ridley Jopling borderline lepromatous or lepromatous leprosy. The patient was treated ...