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This article presents the design and develop of a weather station for educational purposes, which can be monitored continuously under different kinds of climatological changes and works autonomously to the energy network. The proposal of this design is based mainly on the measurement of temperature, humidity, wind, UV radiation and rain parameters using low cost commercial sensors compatible with...
The present work proposes to recognize the static hand gestures taken under invariations features as scale, rotation, translation, illumination, noise and background. We use the alphabet of sign language of Peru (LSP). For this purpose, digital image processing techniques are used to eliminate or reduce noise, to improve the contrast under a variant illumination, to separate the hand from the background...
The quality of electrocardiogram (ECG) signal is fundamental for reliable patient diagnosis. Reality is that ECG signal will be, in most cases, corrupted with electromagnetic interference (EMI) from several sources, mainly power-line. This type of interference can be reduced with different well-known methods like IIR (infinite impulse response) notch filters and adaptive cancelling algorithms. In...
In this paper, three Vivaldi antenna are introduced to compare their performance. As base for our study an ordinary Vivaldi antenna is designed. Then defected ground structures (DGS) are employed to extend the low-end bandwidth limitation and improve the radiation characteristics at lower frequencies. A prototypes with 4 pairs of DGS placed in the antennas is fabricated and experimentally compared...
As an extension of a previous methodological proposal to provide management of information security in Industrial Control Systems (ICS), this study aims to adapt IT frameworks to protect industrial and manufacturing enterprises against Information and Communication Technology disruptions and malicious activity. In order to accomplish this purpose, the integration of traditional IT standards and good...
This research presents the design and implementation of a precision agriculture system using sensor networks as the basis in precision agriculture for farmers of white cabbage (Brassica rapa ssp. Pekinensis) in Panama/China with the aim of transferring knowledge and mitigating the effects of the soil and climate change on crops of white cabbage. Finally we found the optimal ranges to improve productivity...
The purpose of using Predictive Modeling for presumptive diagnosis of Type 2 Diabetes Mellitus based on symptomatic analysis is the optimization of the diagnosis phase of the disease through the process of evaluating symptomatic characteristics and daily habits, allowing the forecasting of T2DM without the need of medical exams through predictive analysis. The tool used was SAP Predictive Analytics...
The human kidney can be seriously threated in the cases where the presence of bunches of electric charges may cancel its electric shield that plays the protectionist role against the pass of giant proteins through the urine. In this paper we use simple physics equations in order to extract the electric field which exerts force on the negative charge distribution located along the glomerular membrane...
In this paper, a comparison of IMU-based step length and heading estimation methods for indoor environments is presented. We compared two step detection methods: detecting the stance phase in each stride and detecting negative peaks in the horizontal acceleration filtered signal. Likewise, three step length estimation methods were compared: Zero Velocity Update (ZUPT), step frequency-based and step...
Social conflicts in the world have increased, due to the fact that the natural resources is being over exploited. In this work, we conducted a social conflict analysis using the entropy-weight method, which is based on Shannon entropy theory. The case study was conducted on a mining project allocated in northern Peru. The rural population and urban population stakeholder groups were analyzed under...
Wildlife inventories contribute to gauging the value of biodiversity in the Amazon rainforest. However, few studies have been made about this subject, mainly because of the lack of appropriate technology. In this paper, the design of hardware and software of a low-cost long-lasting time flight drone is proposed with the purpose of serving as a data mule to export data from an isolated wireless multimedia...
Citizen criminality has become an important social problem in Lima city, due to the fact that the number of crimes has increased. In this study, we conducted a citizen criminality assessment using the grey clustering method, which is based on grey systems theory. The case study was conducted on 32 districts from Lima, Peru. Consequently, a map on the citizen criminality situation was obtained. The...
This paper analyses the influence of common test in power transformers health index assessing. To achieve this objective a test based sensibility analysis is proposed. To show results, a study case is proposed, using a set of real scenarios analyzes the variation of the output (health index) when each input (oil tests) are varied.
The people that need rehabilitation have grown and have overwhelmed therapists therefore new technological advances are required to provide service to a larger population, also the cost is a factor to consider. Particularly, the people who has suffered and survive a stroke (cerebral sudden malfunction) usually need therapy to recover lost functions, such as neuromuscular coordination. In this work,...
Video background modeling, used to detect moving objects in digital videos, is a ubiquitous pre-processing step in computer vision applications. Principal Component Pursuit (PCP) PCP is among the leading methods for this problem. In this paper we proposed a new convex formulation for PCP, substituting the standard ℓ1 regularization with a projection onto the ℓ1-ball. This formulation offers an advantage...
This paper presents a water quality monitoring system using low power hardware based in the Internet of Things. Six sensor nodes for water quality monitoring in pisciculture are installed in three region of the Peruvian amazon. The sensor node is a modular hardware composed by control, communication and sensor module that measure parameters such as pH, conductivity and temperature. All data information...
In this paper, a simulation model of digital intermediate frequency (IF) GPS signal is presented. This design is developed based on mathematical model representing the digitized IF GPS signal. In details, C/A code, navigation data and P code, and the noise models are configured some initial settings simultaneously. Simulation results show that the simulated signals share the same properties with real...
This paper's main objective is to analyze the quality of service using the network simulator NS2, in an infrastructure WLAN for voice, video, and data with IEEE 802.11g and IEEE 802.11e standards by access types DCF (Distributed Coordination Function), Enhanced Distributed Channel Access (EDCA) and Hybrid Coordination Function Controlled Channel Access (HCCA). For this purpose, comparative studies...
Supervisory Control and Data Acquisition (SCADA) systems are used in many industries, particularly in the control of nationwide electric grids. These systems may by law, technical obsolescence, or failure, need to be replaced by newer ones. However, the testing and handing over of functions from the old SCADA to the new one (i.e., switchover) has to be done with minimum risk and maximum continuity...
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