This paper discusses the possibility to create railway interlocking software in an automated process. The classic approaches are interlocking tables or relay modules. In the case of using interlocking tables, they form the core of the signal box. This means ideally that two signal boxes differ only by their interlocking tables. The major disadvantage of interlocking tables is the massive manual...

Interlocking tables are the functional specification defining the routes, on which the passage of the train is allowed. Associated with the route, the states and actions of all related signalling equipment are also specified. This paper formally models the interlocking tables using Coloured Petri Nets (CPN). The CPN model comprises two parts: Signaling Layout and Interlocking Control. The Signa...

Polyrotaxane metal-organic frameworks (PMOFs) have attracted considerable attention due to their aesthetic topologies and potential biological applications. In this paper, we synthesized two kinds of hcb networks with nanoscale macrocycles. The hcb networks interlocked with each other in inclined and parallel interlocking modes respectively, giving rise to two new PMOFs, {[Ni(DPDBT)(bdc)]·(H2O)...

Abstract High levels of reliability and high security are the basic characteristics and requirements of railway signal systems. So, reliability, availability and maintainability (RAM) are necessarily analyzed before the computer interlocking system will be adopted. The All-electronic Computer Interlocking System, which is a new kind of interlocking system, still needs to analyze its RAM before ...

OBJECTIVE To determine if an interlocking bolt would limit subsidence of the biological fixation universal hip (BFX(®)) femoral stem under cyclic loading and enhance construct stiffness, yield, and failure properties. STUDY DESIGN Ex vivo biomechanical study. ANIMALS Cadaveric canine femora (10 pairs). METHODS Paired femora implanted with a traditional stem or an interlocking stem (constr...

This study sought to determine the utility of an interlocking finger task in screening for parietal lobe dysfunction. The ability of 69 patients to imitate a standardised set of four interlocking finger figures was compared with concurrent performance on formal neurocognitive tests. Poor interlocking finger test scores correlated most highly with standard measures of parietal lobe dysfunction. ...

Objective: To compare the outcome (union) between reamed and unreamed nailing in tibial diaphyseal fracture (transverse). Material and methods: This randomized study was carried out in the Department of Orthopedic Surgery, Nishtar Hospital, Multan from January 2009 to September 2009. Two hundred and ten patients were divided into two groups A and B. Group A patients were managed by reamed inter...

of diaphyseal long bone fractures. Interlocking nails have transverse cannulations that accommodate transcortical screws, allowing surgeons to firmly fix the rod within the medullary canal, thereby effectively neutralizing bending, rotational, and axial forces that act on fractures. Interlocking nails have become increasingly To counter axial and rotational forces, intramedullary nails were dev...

According to the masonry standard the compressive strength is basically dependent on factors such as the mortar strength and the relative values of unit and mortar strength. However interlocking brick has none or less use of mortar. Therefore there is a need to investigate the behavior of masonry walls using interlocking bricks. In this study a series of tests have been conducted; physical prop...