In this work the electromagnetic modeling activities of the Electromagnetics and Matter Research Group (GEM) at the Technical University of Cartagena are reviewed. In particular, waveguide inverse permittivity measurement techniques, neural network devices modeling and efficiency and electric field uniformity achievement for multimode ovens by using dielectric moulds are reviewed. Additionally,...

The study and modeling of driver’s gaze dynamics is important because, if and how the driver is monitoring the driving environment is vital for driver assistance in manual mode, for take-over requests in highly automated mode and for semantic perception of the surround in fully autonomous mode. We developed a machine vision based framework to classify driver’s gaze into context rich zones of in...

Battery energy is a rare resource in MANET and it often affects the communication activities in network. In this paper, we first present an energy management model, in which each node can transfer its state between power-save mode and active mode. Based on such model, we propose a routing protocol for further energy control. In the protocol, a new routing function dealt with both MAC layer and ...

One of the challenges that any powered lower limb orthotic or prosthetic device must address for activities in the real world is its ability to recognize gait modes (level ground walking, stairs, ramps, etc.) and adapt to mode changes promptly. There are two critical aspects of this problem. First, the gait mode has to be recognized at the earliest possible time to prevent potential misfiring (...

The objective of the present study was to evaluate the inhibitory properties of various extracts of propolis on alpha-glucosidase from baker's yeast and mammalian intestine. Inhibitory activities of aqueous ethanol extracts of propolis were determined by using 4-nitrophenyl-D-glucopyranoside, sucrose and maltose as substrates, and acarbose as a positive reference. All extracts were significantl...

Evidence indicates that lateral-line fibers, other than those mediating the "spontaneous" activity of the lateral-line receptors, are brought into play in response to pressure stimuli in catfish and in trout. The distribution and mode of stimulation of mechanoreceptors along the lateral-lines of trout and catfish are discussed in relation to the natural activities of these forms.

Restoring archaeology and architecture, we propose a 3D navigation mode based on topographic and cognitive paths. During the exploration of a 3D model, the learner can create his own memory map facilitating the appropriation and memorization of knowledge. In this article, we will correlate the exploration and creation activities. The Great Pyramid of Giza is a support to this work.

project scheduling   net present value   we consider a project scheduling problem with permitted tardiness and discrete time/resource trade-offs under maximum net present value objective. in this problem, a project consists of a set of sequential phases such that each phase contains one or more sub-projects including activities interrelated by finish-start-type precedence relations with a time ...

A suitable organizational structure is necessary for companies to effectively manage foreign activities. Firms can choose from among several modes of foreign market entry, including exporting, contractual agreements, joint venturing, acquiring an existing company, and establishing a wholly owned greenfield investment from scratch. However, the majority of literature on foreign market entry mode...

Typical processes controlled by hard real-time computer systems undergo several, mutually exclusive modes of operation. By deterministically switching among a number of static schedules, a pre run-time scheduled system is able to adapt to changing environmental situations. This paper presents concepts for speci cation of mode changes, construction of static schedules for modes and transitions, ...