A program of geologic mapping and lithogeochemical and geochronological sampling has been carried out over a 745-km area of the Atacama Desert surrounding the porphyry Cu deposits at Escondida, Zaldívar, and Chimborazo (Cordillera de Domeyko, northern Chile). The purpose of this study was to examine the regional tectonic and magmatic setting of this preeminent porphyry Cu district for evidence ...

The corridor allocation problem (CAP) seeks the effective placement of given facilities in two parallel rows on opposite sides of a central corridor. The placement of the facilities in both the rows starts from the same level and no gap is allowed between two facilities of a row. The CAP is formulated here as a nonlinear bi-objective optimization problem, in which both the overall flow cost amo...

A vision-based approach to obstacle avoidance for autonomous land vehicle (ALV) navigation in indoor environments is proposed. The approach is based on the use of a pattern recognition scheme, the quadratic classifier, to find collision-free paths in unknown indoor corridor environments. Obstacles treated in this study include the walls of the corridor and the objects that appear in the way of ...

The present work considers corridor–following maneuvers for nonholonomic mobile robots, guided by sensory data acquired by panoramic cameras. The panoramic vision system provides information from an environment with textured walls to the motion control system, which drives the robot along a corridor. Panoramic cameras have a 360 visual field, a capability that the proposed control methods explo...

Working on the premise of importance comparative lesson-drawing for policy outcomes, and not ignoring limitations learning in practice as well crucial role context shaping transition this article argues that case Morocco - a country at forefront renewable energy development Africa provides salient lessons Economic Community West African States (ECOWAS) its design implementation Clean Energy Cor...

The restoration of historical transport routes and the creation new ones is a strategic objective most states in modern times. Located at intersection North–South East–West routes, Azerbaijan currently recognised as an important logistics hub. Successful cooperation with European Union countries this field taking place. international passing through territory are very convenient for cargo trans...

PURPOSE The clinical target volume (CTV) of post-operative radiotherapy for soft tissue sarcoma of the limbs conventionally includes the whole of the transverse cross-section of the affected anatomical compartment. In the anterior thigh sartorius appears to lie within its own fascial compartment and can be safely excluded. We investigated the potential impact of omitting sartorius from the ante...

Fifty Nerodia sipedon living along two kilometers of an urban stream in northeastern Pennsylvania were radiotracked over three activity seasons, yielding more than 2520 relocations. Half the stream length is urbanized, flowing through a city park at the head of the study area and an industrial area at the downstream end; the half between is relatively natural, flowing through a conservation cor...

A primary purpose of this opening address for the winter session of the Hospital is to welcome the new students. I sometimes hear of medical students in midstream wondering whether they have chosen the right profession or more definitely stating that they have made a mistake. This often arises from exhaustion by the scientific pressures of the first three years, and I can only say that it is ra...