Universidad Tecnológica de Bolivar UTB (Colombia): últimos ingresos
Mostrando ítems 2821-2840 de 11668
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Wireless passive sensing application using a cavity loaded evanescent mode half mode substrate integrated waveguide resonator
(2011)In this work, an evanescent mode half mode substrate integrated waveguide (HMSIW) resonator is designed for a wireless passive sensing application at 5 GHz. The wireless pressure sensor has been implemented by placing a ... -
Research on energy indexes of cogenerated plants with gas turbines and heat recuperator steam generators
(2012)The main objective of this paper is the experimental investigation of the energy indexes of a cogeneration plant with Gas Turbines (GT) and Heat Recuperator Steam Generators (HRSGs) while changing its operational load. The ... -
Robot based on task-space dynamical model
(2011)This study deals with the dynamic modelling and task space control of the Stewart-Gough platform. The dynamic equations were obtained using the virtual work approach, and include all the 13 presented in the platform, that ... -
Children vaccination programs in latin america, 2000-2015
(Editorial Ciencias Medicas, 2019)Introduction: Coverage of children vaccination programs is associated with the survival probability of infants and it is a measure of the performance of national immunization systems. Objective: To characterize children ... -
Viable business models for M-commerce: The key components
(IGI Global, 2011)As mobile applications increase in popularity, the issue of how to build viable business models for the m-commerce industry is becoming a clear priority for both organizations and researchers. In order to address this ... -
Electrically tunable evanescent mode half-mode substrate-integrated- waveguide resonators
(2012)Electrically tunable evanescent mode half mode substrate integrated waveguide (HMSIW) resonators are implemented for S band applications. An HMSIW loaded with a complementary split ring resonator (CSRR) achieves forward ... -
Differential diagnosis of hemorrhagic fevers using ARTMAP
(Springer Verlag, 2012)The differential diagnosis of endemic hemorrhagic fevers in tropical countries is by no means an easy task for medical practitioners. Several diseases often overlap with others in terms of signs and symptoms, thus making ... -
Economic lot scheduling with deliberated and controlled coproduction
(2012)This paper presents an algorithm to define the optimal parameters for deliberated and controlled coproduction in an economic lot scheduling problem setting (DCCELSP). Coproduction is said to be deliberated and controlled ... -
An Infinite Family of Magnetized Morgan-Morgan Relativistic Thin Disks
(2012)Applying the Horský-Mitskievitch conjecture to the empty space solutions of Morgan and Morgan due to the gravitational field of a finite disk, we have obtained the corresponding solutions of the Einstein-Maxwell equations. ... -
Stationary axially symmetric relativistic thin discs with nonzero radial pressure
(2012)A detailed analysis of the surface energymomentum (SEMT) tensor of stationary axially symmetric relativistic thin discs with nonzero radial pressure is presented. The physical content of the SEMT is analysed and expressions ... -
Corporation income taxes and the cost of capital: A revision
(2012)The value of debt tax shields in foundational corporate valuation models by Nobel Laureates Modigliani and Miller (MM) continues to be a controversial issue that is central to our understanding of corporate finance. Rather ... -
Perturbing the boundary conditions of the generator of a cosine family
(2012)Let A be a densely defined, closed linear operator (which we shall call maximal operator) with domain D(A) on a Banach space X and consider closed linear operators L:D(A)→∂X and Φ:D(A)→∂X (where ∂X is another Banach space ... -
Harmonic analysis of shear deformable orthotropic cracked plates using the Boundary Element Method
(2012)In this work, the modal and harmonic analysis of orthotropic shear deformable cracked plates using a direct time-domain Boundary Element Method formulation based on the elastostatic fundamental solution of the problem is ... -
Ultrasound image enhancement: A review
(2012)Medical ultrasound imaging uses pulsed acoustic waves that are transmitted and received by a hand-held transducer. This is a mature technology that it is widely used around the world. Among its advantages are that it is ... -
VSC with direct PI power control for frequency compensation in a microgrid: A PBC approach
(Institute of Electrical and Electronics Engineers Inc., 2019)The power systems with low inertia such as microgrids require advanced control strategies to improve their performance. These type of grids use voltage source converters to interconnect renewable energy sources and storage ... -
Highly compact surface micromachined metamaterial circuits using multilayers of low-loss Benzocyclobutene for microwave and millimeter wave applications
(2012)This work explores the implementation of highly compact three dimensional (3D) integrable metamaterial based transmission lines on a low resistivity CMOS grade silicon substrate for microwave and millimeter wave applications. ... -
Static secure page allocation for light-weight dynamic information flow tracking
(2012)Dynamic information flow tracking (DIFT) is an effective security countermeasure for both low-level memory corruptions and high-level semantic attacks. However, many software approaches suffer large performance degradation, ... -
Development and/or change of the notion of permanent object and operative causality: Empirical evidence in the frst year of life
(Fundacion para el Avance de la Psicologia, 2013)This study examines the notion of permanent object during the first year of life, taking into account the controversy of two approaches about the nature of change: developmental change and cognitive change. Using a ... -
Supplier selection service-case study UTB
(2012)Supplier selection supported by methods based on computational tools are fundamental enterprise actions. This paper proposes the development of supplier selection model supported on a computational tool, using the purchasing ... -
An omnidirectional wrappable compact patch antenna for wireless endoscope applications
(2012)An inductively loaded compact patch antenna for a radiation frequency of 433 MHz is designed taking into consideration a human-body model and fabricated on a flexible liquid crystalline polymer (LCP) substrate, which is ...