• Seismic Response of Single-Degree-of-Freedom Systems with Structural Fuses 

      Vargas, Ramiro (2003)
      Passive energy dissipation (PED) devices have been implemented to enhance structural performance by reducing seismically induced structural damage. In this article, metallic dampers are defined to be structural fuses (SF) ...
    • Study of The Corrosion Products Formed on Carbon Steels in The Tropical Atmosphere of Panama 

      Jaén, Juan A.; De Villalaz, M. S.; Araque, L.; Hernández, Cecilio; De Bósquez, A. (2003)
      Mössbauer spectroscopy and X-ray powder diffraction (in selected samples) have been used to characterize corrosion products on carbon steels after atmospheric exposure to the tropical Panamanian locations of Panama and ...
    • La responsabilidad civil por daño ambiental, en la actualidad del derecho positivo panameño 

      Flores, Elsa (2003-12-01)
      La responsabilidad civil por daño ambiental toma en consideración los daños sociales, la individualización del sujeto responsable y las dificultades de determinar el monto de la indemnización. La responsabilidad objetiva ...
    • Robust Cascade Controller for Nonlinearly Actuated Biped Robots: Experimental Evaluation 

      Caballero, Rony; Armada, Manuel; Akinfiev, Teodor (2004)
      In this paper we consider the postural stability problem for nonlinearly actuated quasi-static biped robots, both with respect to the joint angular positions and also with reference to the gripping effect between the ...
    • Investigation of the Structural Fuse Concept 

      Vargas, Ramiro; Bruneau, Michel (2004)
      Passive energy dissipation (PED devices have been implemented to enhance structural performance by reducing seismically induced structural damage. In this paper metallic dampers are defined to be structural fuses (SF) when ...
    • Seismic Response of Single-Degree-of-Freedom (SDOF) Structural Fuse Systems 

      Vargas, Ramiro; Bruneau, Michel (2004)
      Passive energy dissipation (PED) devices have been implemented to enhance structural performance by reducing seismically induced structural damage. In this paper metallic dampers are defined to be structural fuses (SF) ...
    • Floor Response of SDOF Systems with Metallic Structural Fuses 

      Vargas, Ramiro (2004)
      The floor demands of Single-Degree-of-Freedom (SDOF) systems designed or retrofitted with metallic structural fuses are studied in this article. Floor velocity and acceleration are obtained and comparisons are made between ...
    • Estado Actual del Mercado de Frutos y Vegetales Frescos Cortados en Panamá 

      Tejedor, Wedleys (2004-04-01)
      Uno de los principales problemas que confrontan las empresas dedicadas a la elaboración de frutos y vegetales frescos cortados en Panamá, es que no se han realizado estudios tendientes a establecer el tiempo de vida útil ...
    • Measuring contribution of infoplazas to internet penetration and use in Panama 

      Miller, Norma L. (2004-12)
      infoplazas arose in Panama as means to combat the digital gap by providing Internet connectivity to the economically disadvantaged and geographically remote. Yet there is a dearth of information regarding their actual ...
    • On the Design and Development of Climbing and Walking Robots for the Maritime Industries 

      Armada, Manuel; Prieto, M.; Akinfiev, T.; Fernández, Roemi (2005)
      Modern robotic systems are increasingly powerful in terms of sensor fusion and mobility. Present technological progress allows advanced robots to cope progressively much better also with complex environments such as those ...
    • Seismic Response of Hybrid Systems with Metallic and Viscous Dampers 

      Vargas, Ramiro (2005)
      Metallic dampers can enhance structural performance by reducing seismically induced lateral displacements, and by reducing inelastic behavior of beams and columns. Limiting story drift also indirectly allows for mitigation ...
    • Effectiveness of natural antioxidants in sunflower oil 

      Carelli, Amalia A.; Franco, Indira C.; Crapiste, Guillermo H. (2005)
      The antioxidant activity of ∝- and δ-tocopherol, citric acid, ascorbic acid and ascorbyl palmitate was investigated in sunflower oil containing naturally occurring tocopherol. The effectiveness of natural antioxidants in ...
    • HACCP: Una Herramienta Para la Industria de los Vegetales Frescos Cortados 

      Tejedor, Wedleys (2005-03-01)
      El sistema de Análisis de Peligros y Puntos Críticos de Control (HACCP, siglas en inglés) es un sistema de inocuidad alimentaria, diseñado para identificar y valorar peligros, establecer y vigilar controles para prevenir, ...
    • Robot Saltador y Procedimiento para su Control 

      Akinfiev, Teodor; Armada, Manuel; Fernández, Roemi; Montes, Héctor (2005-10-01)
      Robot saltador para el movimiento en terrenos con obstáculos, que contiene al menos un resorte (4) con uno de sus extremos unido al cuerpo (1) del robot, y una cadena cinemática entre el motor (5) y el resorte (4) que ...
    • Active thermo chemical tables: thermochemistry for the 21st century 

      Ruscis, Branko; Pinzón, Reinhardt; von Laszewski, Gregor; Kodeboyina, Deepti; Burcat, Alexander; Leahy, David; Montoy, David; Wagner, Albert F (2005-12)
      Active Thermochemical Tables (ATcT) are a good example of a significant breakthrough in chemical science that is directly enabled by the US DOE SciDAC initiative. ATcT is a new paradigm of how to obtain accurate, reliable, ...
    • Reliable, Built-in, High-Accuracy Force Sensing for Legged Robots 

      Montes, Héctor; Nabulsi, Samir; Armada, Manuel (2006)
      An approach for achieving reliable, built-in, high-accuracy force sensing for legged robots is presented, based on direct exploitation of the properties of a robot’s mechanical structure. The proposed methodology relies ...
    • Methodology for Zero-moment Point Experimental Modeling in the Frequency Domain 

      Caballero, Rony; Armada, Manuel; Alarcón, Pedro (2006)
      Frequency domain methodology is applied to obtain a nominal model for the Zero-Moment Point (ZMP) stability index of a biped robot in an attempt to establish a relationship between the robot trunk trajectories and the ...
    • Analytical Investigation of the Structural Fuse Concept 

      Vargas, Ramiro; Bruneau, Michel (2006)
      Passive energy devices (PED) are useful to enhance structural performance by reducing seismically induced structural damage. Metallic dampers are one such PED. When they are designed such that all damage is concentrated ...
    • Geophysical Investigations in the Old Panama Archaeological Site 

      Mojica, Alexis; Acosta, Leomar; Acosta, Leomar; Guérin, Roger; Ho, Carlos A.; Caballero, Orlando (2006)
      The results of geophysical prospections in an archaeological site of hispanic type in Panama (Central America) are presented in this article. The archaeological site of Old Panama has been intensively investigated with the ...
    • Seismic Design of Multi-story Buildings with Metallic Structural Fuses 

      Vargas, Ramiro; Bruneau, Michel (2006)
      Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for ...