Browsing by Author "Carvajal, Jorge"

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Desarrollo de sistemas receptores de AM, FM y ADS-B utilizando radio definida por software, hardware y software libre
(Universidad de Cuenca, 2015) Romero, Santiago; Tipantuña, Christian; Estrada, José Antonio; Carvajal, Jorge; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
This paper describes in real applications the potential and flexibility of the Software Defined Radio (SDR) technology, for this purpose the development of different low-cost communications systems using open source hardware and software is shown. The AM, FM and ADS-B receivers described in this paper have been developed using a credit card size computer Raspberry Pi and a module RTL-SDR as hardware platform; on the other hand as software platform is used the distribution Raspbian, GNU Radio toolkit and the software Dump 1090.
Desarrollo e implementación de un nuevo plan de mantenimiento para equipos de perforación diamantina
(Universidad de Cuenca, 2015-04-01) Carvajal, Jorge; Rodríguez, César; Patiño, Carmen; Guevara, Fernando
The geography of Colombia requires carrying the exploration equipment to remote places to execute the process of mineral resource exploration. For this reason, unexpected failures can cause long downtime and time to repair, production losses, besides of put in risk a safety of personnel and the physical assets. In this context, to develop modifications to the original maintenance plan looking for high availability of diamond drilling equipment could be required. This paper presents the development and implementation of maintenance plans based on an analytical method, that it begins with a functional analysis of the system, it continues with the revision and identification of current maintenance plans. Subsequently, the method does a historical fault analyzes, and finally, using the systematization of all information, it a proposal and implementation of a new plan of proper maintenance for the conditions of use of the system is performed. The application of this method has represented benefits in one of Colombia's most important mineral resource exploration companies. Similarly, the decision to generalize maintenance plans for hydraulic equipment was adequate for historical use of faults, bringing economic benefits and an increase availability. Finally, as a result of the development of this work is recommended to evaluate maintenance plans every two years and thus reassess their effectiveness.
Procesamiento de datos de espectrometría de masas: algoritmos y metodologías
(Universidad de Cuenca, 2015) Calle, Sofía; Chasiluisa, Silvia; Carvajal, Jorge; Herrera, Roberto; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
Cancer is an asymptomatic disease at an early stage and very difficult to diagnose in many cases it is not perceived until it has already reached the stage of metastasis, spreading in other organs of the body. It is the second cause of death in Ecuador despite progress made in recent years have been revolutionary, there are cases where the cancer is detected in its terminal stage and still has not found any scientific or empirical methodology to indicate the presence of this pathology. Traditional methods of diagnosing cancer in any of its types are relatively ineffective in early stages, using invasive methods and at risk of being detected as false positive or false negative. Research centers and universities have joined forces to seek alternative diagnosis and treatment of cancer using methods to improve the efficiency of diagnosis and detection of cancer in its early stages. This paper discusses a group of algorithms and methodologies for processing data sets of mass spectrometry measurements of cancer and normal analyzed samples using computing platforms aimed at improving the quality of measurements for biomarkers definition applications.