This paper shows how to generate a finite-vertex graph, called a reachability graph for discrete event system specification (DEVS) network. The reachability graph is isomorphic to a given original DEVS network in terms of behavior but the number of vertices as well as the number of edges of the reachability graph are finite. To obtain the finite-vertex reachability graph of a DEVS network, this...

Cycling is popular for transportation and leisure. Bike helmets are used to mitigate the risk of head injury in collisions or falls. According to NHTSA, 52,000 cyclists were injured in the US in 2010. Head injuries accounted for two thirds of hospital admissions, among cyclists. Despite strong epidemiological evidence of efficacy, some researchers and many lay people argue that bicycle helmets ...

Drone imagery is increasingly used in automated inspection for infrastructure surface defects, especially hazardous or unreachable environments. In machine vision, the key to crack detection rests with robust and accurate algorithms image processing. To this end, paper proposes a deep learning approach using hierarchical convolutional neural networks feature preservation (HCNNFP) an intercontra...

1- introduction transportation and traffic is one of the major issues and challenges that are facing urban managers. so that it has become one of the major challenges in the political area. transport is one of the most important elements of urban development which is used for people and goods moving from a different geographical place to other places. in order to achieve efficient productive in...

We write to highlight a previously potentially overlooked source of Legionnaires’ disease. Two middle-aged men from the same factory were diagnosed with Legionnaires’ disease in the same week. A joint investigation by Health and Safety Executive (HSE), Health Protection Agency, Local Authority Environmental Health Officers, and the company concerned identified an aqueous pretreatment tunnel as ...

ercutaneous transluminal coronary angioplasty (PTCA) was introduced into clinical practice more than 20 years ago. 1 The breathtaking growth of percutaneous coronary interventions (PCI) during the 1990s in Europe (fig 1) reflects their widespread acceptance for coronary revascularisation, challenging coronary artery bypass grafting (CABG). This review provides an overview of current coronary in...

" How do we explore the digital box of fragments that pastes together disjunctive arrays of images and sets of data into a seemingly continuous display? " … We " need to develop new modes of perception with which to receive, absorb, criticize, and produce new combinations of information " M. Christine Boyer In a 1995 article, appeared in " Le Monde Diplomatique " , the French theorist of techno...