A novel constraint model for scheduling train trips on a network of tracks used in both directions is described. We argue that a generalization of a job-shop scheduling formulation can drastically decrease the problem size. Preliminary complexity and performance results and a set of examples of schedules generated by our implementation are presented.

This paper presents the results of a field investigation in the unsaturated, fractured welded tuff within the Exploratory Studies Facility (ESF) at Yucca Mountain, NV. This investigation included a series of tests during which tracer-laced water was released into a high-permeability zone within a horizontal injection borehole. The tracer concentration was monitored in the seepage collected in a...

The 40Ar/39Ar geochronology method is capable of high precision (<0.05%), but remains limited by relatively large uncertainties in 40K decay constants and the ages natural reference mineral standards. most widely used well-known ca. 28 Ma Fish Canyon Tuff sanidine (FCTs). Several studies have attempted to calibrate FCTs against astronomically tuned tephra Crete (Faneromeni A1 tephra) Morocco (M...

We present the stratigraphy, lithology, volcanology, and age of the Acahualinca section in Managua, including a famous footprint layer exposed in two museum pits. The ca. 4-m-high walls of the main northern pit (Pit I) expose excellent cross sections of Late Holocene volcaniclastic deposits in northern Managua. We have subdivided the section into six lithostratigraphic units, some of which we c...

References COM (2021) n 572 final del 16 luglio 2021, Strategia forestale europea 2030, 82 final, dell'24 febbraio 2021 - Plasmare un'Europa resiliente ai cambiamenti climatici – La nuova strategia dell'UE di adattamento climatici; (2020) 380 25 maggio 2020, “Strategia sulla biodiversità per il 2030 Riportare la natura nella nostra vita”; (2019) 0640 dell'11 dicembre 2019, Green Deal europeo. 3...

Wave propagation is used as an advanced tool of determining elastic properties of rocks. In spite of being cheap and non destructive tests of rock mechanics, due to its modernity method is not yet replacing the traditional dear and destructive tests. In order to pave ways of replacing this test and making best use of it all effective factors of such method are to be assessed. One fundamental fa...

With the advent of arthroscopy and arthroscopic repair techniques, the diagnosis and treatment of subscapularis tears have been significantly advanced. The precise etiologic factors related to subscapularis tears remain unclear. We propose that subcoracoid stenosis and subcoracoid impingement cause a "roller-wringer effect" on the subscapularis tendon. This effect increases the tensile loads on...

Even though a great attention has been given on the cervical cancer diagnosis, it is a tuff task to observe the pap smear slide through microscope. Image Processing and Machine learning techniques helps the pathologist to take proper decision. In this paper, we presented the diagnosis method using cervical cell image which is obtained by Pap smear test. Image segmentation performed by multi-thr...

Abstract In this study, nine volcanic tuffs from Armenia, Germany and Mexico were treated with two commercially available consolidants on base of silicic acid ester, as well different pretreatments an anti-swelling agent and/or primer components. Prior to the treatment, analyzed regarding their petrography mineralogy, a greater focus clay mineral content. The effect consolidation was evaluated ...