Juan I. Nieto

Autonomous University of Baja California | UABC · Facultad de Ingeniería, Arquitectura y Diseño (Ensenada)

Coronavirus disease (COVID-19) represents one of the greatest challenges to public health in modern history. As the disease continues to spread globally, medical and allied healthcare professionals have become one of the most affected sectors. Stress and anxiety are indirect effects of the COVID-19 pandemic. Therefore, it is paramount to understand...

Coronavirus disease (COVID-19) represents one of the greatest challenges to public health in modern history. As the disease continues to spread globally, medical and allied healthcare professionals have become one of the most affected sectors. Stress and anxiety are indirect effects of the COVID-19 pandemic. Therefore, it is paramount to understand...

In this work, we report an optofluidic system for manipulation of orientation of zeolite crystals near the bottom of a rectangular cross-sectional, straight, quartz microfluidic channel. Manipulation is accomplished by using two computer-controlled syringe pumps that generate adequate hydrodynamic forces for translation and rotation of crystals. Ro...

Real-life implementation of the Internet of Things (IoT) in healthcare requires sufficient quality of service (QoS) to transmit the collected data successfully. However, unsolved challenges in prioritization and congestion issues limit the functionality of IoT networks by increasing the likelihood of packet loss, latency, and high-power consumption...

En este trabajo se muestra cómo el aprendizaje automático puede llegar a ser útil para ayudar a dormir mejor, es decir lograr una buena calidad de sueño, determinando cuales son las actividades que más afectan a un individuo, las cuales pueden variar dependiendo de cada persona y no siempre se está consciente de ellas.

Intelligence capabilities will be the cornerstone in the development of next-generation cognitive networks. These capabilities allow them to observe network conditions, learn from them, and then, using prior knowledge gained, respond to its operating environment to optimize network performance. This study aims to offer an overview of the current st...

The need to compete for users’ attention and provide them with the best user experience has increased the use of persuasion strategies in modern systems. Currently, Persuasive Systems (PSs) promote healthy behavior for well-being, energy consumption, and learning. Although the educational domain has limited investigation compared to other areas, PS...

The objective of this work is to perform image quality assessment (IQA) of eye fundus images in the context of digital fundoscopy with topological data analysis (TDA) and machine learning methods. Eye health remains inaccessible for a large amount of the global population. Digital tools that automize the eye exam could be used to address this issue...

The classification of services in 5G/B5G (Beyond 5G) networks has become important for telecommunications service providers, who face the challenge of simultaneously offering a better Quality of Service (QoS) in their networks and a better Quality of Experience (QoE) to users. Service classification allows 5G service providers to accurately select...

With constantly increasing demand in connected society Internet of Things (IoT) network is frequently becoming congested. IoT sensor devices lose more power while transmitting data through congested IoT networks. Currently, in most scenarios, the distributed IoT devices in use have no effective spectrum based power management, and have no guarantee...

Este trabajo reporta sobre el diseño, implementación y evaluación de una encuesta virtual, utilizada como filtro sanitario remoto, aplicado en el Sistema Educativo Adventista de Baja California, durante la contingencia sanitaria generada por el virus SARS- CoV-2. Esto a fin de generar información en tiempo real y de forma segura, para salvaguardar...

In this work, the integration of various elements was realized. This allowed the development of a measurement system for quantitative determination of the electrical response of the faujasite-modified QCM, which was caused by a change in mass during the adsorption and desorption processes. The nanostructured faujasite film was grown on the QCM surf...

Scientific applications require to process, analyze and transfer large volumes of data in the shortest possible time from distributed data sources. In order to improve their performance, it is necessary to provide them with specific QoS parameters. On the other hand, SDN is presented as a new paradigm of communications networks that facilitates the...

This work reports on the design, implementation and evaluation of a survey used as a remote sanitary filter, which was applied in the Adventist Educational System of Baja California. During the SARS-CoV-2 sanitary contingency. This with the intention of acquiring information safely and in real time. Allowing to safeguard the integrity of the educat...

When Internet of Things (IoT) big data analytics (BDA) require to transfer data streams among software defined network (SDN)-based distributed data centers, the data flow forwarding in the communication network is typically done by an SDN controller using a traditional shortest path algorithm or just considering bandwidth requirements by the applic...

In this work we present an Unmanned Aircraft Vehicle (UAV) designed from off-the-shelf components to release ocean mini-drifters. Its endurance (~ 1 h), payload (~5 kg), offshore range (30 km), capability of operating into wind conditions of ~10 knots, high precision autopilot (2-3 m), flying altitude of ~500 m above sea level, along with its relat...

Currently healthcare data packets do not get any special priority while routing through the Internet of Things (IoT) networks. These data packets flow through routers using conventional QoS process which does not guarantee that a patient’s critical health data traveling in congested IoT network will actually be routed to doctors office on time. Thi...

Waveguides are structures that can be used as sensors. After adding a cladding of a proper material, waveguides can be used for detecting specific chemical species. In particular, high band gap oxide semiconductors can be used as cladding for optical waveguides. In these materials, the synthesis processes are expensive or contaminant generators, fo...

End-to-end delay, aiming to realize how much time it will take for a traffic load generated by a Mobile Node (MN) to reach Sink Node (SN), is a principal objective of most new trends in a Wireless Sensor Network (WSN). It has a direct link towards understanding the minimum time delay expected where the packet sent by MN can take to be received by S...

Atrial fibrillation (AF) is a common type of cardiac arrhythmia. AF is associated with increased rates of death and hospitalizations. It is also related to a degraded quality of life and reduced exercise capacity. Ageing increases the risk of developing AF, as well as hypertension and obesity. Continuous ECG monitoring is required in patients with...

In most aerial vehicles, accurate information about critical parameters like position, velocity, and altitude is critical. In these systems, such information is acquired through an inertial measurement unit. Parameters like acceleration, velocity, and position are obtained after processing data from sensors; some of them are the accelerometers. In...

Positioning technologies are useful in a great number of applications, which are oriented for pick and place robots, manipulation of machine tools, especially on machines oriented for artificial vision and detection systems, such as vision-guided robotic systems and object existence in a limited environment. Due to the high demand of those applicat...

In recent years, traditional data centers have been used to host high-performance computing infrastructure, such as HPC clusters, addressing specific requirements for different research and scientific projects. Computes, storage, network, and security infrastructure is usually from heterogenous manufacturers and has multiple management interfaces.

In the last decade, the number of wireless devices in the 2.4 GHz band has grown rapidly, such as WiFi, Bluetooth, ZigBee and IEEE 802.15.4. This scenario increases the probability of spectrum saturation. The implementation of the Cognitive Radio proposes an alternative to reuse spectrum, in order to guarantee a peaceful coexistence with the other...

Nowadays artificial intelligence and swarm robotics become wide spread and take their approach in civil tasks. The main purpose of the article is to show the influence of common knowledge about surroundings sharing in the robotic group navigation problem by implementing the data transferring within the group. Methodology provided in article reviews...

The use of sensors is a primary need in robotic systems. There are sensors that generate a signal whose frequency depends on input stimulus. The application of such sensors is desirable due to their short response time, accuracy, and resolution. For proper use of these sensors, adequate frequency measurement is required. The principle of rational a...

Nowadays artificial intelligence and swarm robotics become wide spread and take their approach in civil tasks. The main purpose of the article is to show the influence of common knowledge about surroundings sharing in the robotic group navigation problem by implementing the data transferring within the group. Methodology provided in article reviews...

Nowadays, obesity is a serious health problem worldwide. Its occurrence has exponentially increased in both children and adults, especially in developing countries. Since overweight and obese children are more likely to be overweight or obese adults, it is important to control and prevent childhood obesity. Moreover, overweight and obesity can put...

An important challenge to be addressed in the search for an optically based, non-invasive blood glucose quantification method, is related to the spectral interference between glucose and insulin in the mid-infrared region. This work proposes the use of a factorial experimental design in order to understand the optical overlapping of these compounds...

The importance of a constant blood glucose concentration monitoring in order to keep a regular control for diabetic patients, had been established from the medical approach. Several studies accept the necessity of exploring alternatives for the traditional digital glucometer, given the pain and discomfort related to this technique, which can lead t...

The amount of data generated in the laboratory increases constantly, where a common problem needed to be addressed during the data preparation stage is related to noise. The Savitzky-Golay method has been established as the common smoothing technique, where the process is based on two parameters: polynomial order and window size, which are commonly...

The purpose of any measurement is to obtain the required approximation to the measurand. In particular, when measuring time-frequency parameters, traditional methods require more time for measurement, if the frequency value has to be measured more accurately. It is proved that the principle of rational approximations is a method for estimating an u...

Difusión de la ciencia en UABC 2017, talleres, conferencias.

Nowadays, an approach to improve the quality of medical services is the semantic interoperability, and to achieve it, physiological transducers descriptors and data from physiological transducers need to be shared and understood in the same way by Medical Information Systems (MIS), the importance of the physiological transducers in medical environm...

La presión ejercida por el lento desarrollo económico en los sectores productivos, se ha convertido en el aliciente para que las Instituciones de Educación Superior (IES) desarrollen en sus estudiantes las competencias de emprendimiento y liderazgo. Estas competencias las evidencian sus estudiantes principalmente mediante desarrollos tecnológicos q...

For the last decade, several studies on mid-IR spectroscopy for blood glucose quantification have not considered the compounds involved in the glucose regulation mechanism, in which insulin plays an important role. This work shows how insulin overlaps in the same mid-IR region in which glucose is quantified. This optical absorption interference is...

In the last decades, monitoring on marine environment has become in a priority because of the uncontrollable human activities which gradually are destroying the marine environment. Therefore, the usage of information technologies has been considered as a feasible alternative for monitoring marine environments. This paper proposes GeoSoc a cross-lay...

Patients’ medical records have been originally based on paper and since 1865 the medical field recognized the need to improve the means for storing and retrieving disperse information. Electronic Health Records (EHR) systems face similar problems, with interoperability being one of them; it is defined by IEEE standard glossary of software engineeri...

The performance of a radio-communication link between nodes of a network of wireless sensors in marine drift buoys, is presented for applications in the measurement of physical and chemical parameters of sea conditions in waters near the coast. The behavior for various values of irregular sea conditions is assessed. From the carried out simulations...

It has been established the importance of a constant glucose monitoring in order to keep a regular control for diabetes patients. Several medical studies accept the necessity of exploring alternatives for the traditional digital glucometer, given the pain and discomfort related to this technique, which can lead to a compromised control of the disea...

A new Technical Vision System for target detection using a Laser Scanner and the Dynamic Triangulation measurement method was developed at the engineering institute of UABC, which presents a single-sensor, high-speed and low-cost laser scanning system, to determine 3D spatial coordinates of any object under observation. Previous research has shown...

Online SHM Optical Scanning Data Exchange can provide practical monitoring and useful information for people associated with Structural Health Monitoring. The information obtained from the monitoring process can contain data about the behavior of structures such as bridges, buildings, tunnels or dams. The data analysis of structures behavior regard...

in this work described the basic idea of data transferring in the group of robots while they move in area with high density of obstacles for increasing their movement speed by creating and synchronizing an area map that made by each robot separately. This paper provides a brief review of existing robotic swarm projects and definition of problems in...

Many applications have been proposed for the frequency measurement principle using rational approximations; every measurement has an error value that is related to the resolution of the measuring tool; in this technique, measuring is done by comparing an unknown frequency and a known frequency signals. Theoretically, the error in measurement in the...

Wellness is a term often used to talk about optimal health as "dynamic balance of physical, emotional, social, spiritual, and intellectual health." While healthcare is a term about care offered to patients for improving their health. We use both terms, as well as the Business Model Canvas (BMC) methodology, to design a digital ecosystem model for h...

Today chronic diseases are a major health problem worldwide. Treatment for these diseases requires proper monitoring and frequent doctor visits. In recent years several ICT tools have been designed to provide remote patients monitoring, but it is still complicated to offer a useful tool for all kind of patients, since each one has different charact...

Improving excavators control systems allows increasing efficiency and productivity of these machines, reduces loads on an operator and improves his safety. One of the stumbling blocks in the way of improving an excavator control system is uncertainty of high dynamic loads during the bucket and soil interaction. Therefore, this paper deals with the...

Frequency domain sensors (FDS) are important elements in control, data acquisition and monitoring systems. Such sensors have some outstanding characteristics like output of quasi-digital signals, high sensitivity, high resolution, wide dynamic range, anti-interference capacity and good stability. A FDS converts a physical variable (measurand) into...

The development of devices to interconnect different technologies paves the way to achieve interoperability. Although E-health telemonitoring services have additional challenges to overcome, one of them is the semantic interoperability. The aim of this work is to shed light on that issue by proposing the design of a digital device handling the data...

This scoping review aims to answer two questions: Which are the data and communication technology approaches for supporting elderly patients that are facing a chronic diseases such as heart diseases, diabetes mellitus, obesity and respiratory diseases? and Is there evidence of the impact of these approaches?. Six online databases were searched from...

Automation of excavators offers a promise for increasing productivity of digging. At the same time, it's a highly difficult issue due to presence of various nonlinearities and uncertainties in excavator mechanical structures and hydraulic actuators, disturbance when a bucket contacting the ground etc. This paper concerns the problem of robust traje...

Wireless Sensor Networks (WSNs) have been proposed for monitoring vital signs of patients at home. This scenario requires inter-cell mobility; however, WSNs are not designed to support this characteristic. In this paper we propose a cross-layer protocol to manage the handoff, called WSN-HaDaS (Handoff aware of Data Sending), which operates in the t...

We present refinements of a novel transmission power control (TPC) algorithm based on temperature and relative humidity (TRH). Previously, we deployed a prototype TRH TPC algorithm on wireless sensor nodes operating in real harsh environmental conditions and reported promising results. Since then, we have made enhancements of the TRH TPC model, whi...