Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
https://purl.org/pe-repo/ocde/ford#5.02.04
68
https://purl.org/pe-repo/ocde/ford#2.02.04
28
https://purl.org/pe-repo/ocde/ford#2.11.04
28
https://purl.org/pe-repo/ocde/ford#2.00.00
22
Control interno
19
https://purl.org/pe-repo/ocde/ford#5.00.00
17
https://purl.org/pe-repo/ocde/ford#5.05.01
16
más ...
Buscar alternativas:
base function » based function (Expander búsqueda), basis function (Expander búsqueda), basic function (Expander búsqueda)
control base » control case (Expander búsqueda), control bajo (Expander búsqueda), control basado (Expander búsqueda)
base function » based function (Expander búsqueda), basis function (Expander búsqueda), basic function (Expander búsqueda)
control base » control case (Expander búsqueda), control bajo (Expander búsqueda), control basado (Expander búsqueda)
1
artículo
Publicado 2024
Enlace
Enlace
Objective: To validate an explanatory model of cognitive functioning in older adults, based on inhibitory control, working memory and processing speed. Method: Explanatory-correlational design. 128 people between 60 and 85 years of age were evaluated with working memory and processing speed tests of the WAIS-IV intelligence scale, Stroop Test and Neuropsi. Results: Two models of structural equation analysis were applied. In model 1, with the total sample, inhibitory control better explains the cognitive functioning in adults aged 60 to 85 years (β=0.22; p<0.538). Model 2, which included age as a control variable, divided the sample into two age groups, and found that processing speed best predicted cognitive functioning in adults aged 60-70 years (β=2.329; p=0.030). but no variable predicted cognitive functioning in adults aged 71 to 85 years. The second model showed better fitting ...
2
artículo
Publicado 2023
Enlace
Enlace
The objective of the research was to demonstrate that evidence-based learning as a didactic strategy influences the production of functional texts in university students. For this, the following methodology was used: quantitative approach, experimental level, quasi-experimental design. For data collection, the observation and survey technique was used: the instrument used was the rubric —differential semantic scale—, and knowledge test —measures the intellectual part—. To express the data, visual representations, tables and figures were used, obtained through the SPSS v.26 software. The statistical results allowed us to test the hypothesis through the Mann-Whitney U, indicating that the experimental group presents a better result in relation to the control group. In conclusion, evidence-based learning is an advantage for the development of the production of functional texts.
3
artículo
Publicado 2025
Enlace
Enlace
The Strategic Research Plan (PEI) is an essential tool, which defines roles and sets of actions that any Academic Institution must carry out. One of the priorities for academic organizations and especially for universities, is the formation of human capital. That training must develop the research and innovation capabilities of its graduates, to create, generate ventures, transfer and apply new knowledge. Various techniques can be used to prepare the PEI; however, Quality Function Deployment (QFD) includes the voice of the customer and is very effective for developing a PEI. With the use of the QFD it was obtained: the lines of investigation, the processes of planning, design, monitoring and control based on the requirements of CONCYTEC (the voice of the client). Finally, a PEI aligned with the CONCYTEC requirements is justified, thus increasing the possibilities of being able to obtain ...
4
artículo
Publicado 2021
Enlace
Enlace
In the competition of the lighting market, LED technology has stood out for excellent characteristics, one of which is the possibility of dimming, compared to other technologies. The dimming capacity allows to find the comfort zone with respect to two parameters, illuminance and correlated colour temperature (CCT). The present work provides a methodology to find comfort with respect to two variables, the level of illumination and the CCT. A controller with a simple structure, supported by Arduino, is proposed to control the above-mentioned variables of LEDs. The LEDs are located on a tape attached to a heat sink. In addition, the use of a light box as an environment for analysis is proposed. The design of this cubicle is based on literature. The controller has the possibility to regulate 12 different channels and the linearity between the PWM output and the illuminance was verified. The ...
5
artículo
Publicado 2022
Enlace
Enlace
Cotton is the most widely used natural fiber for textiles but its innate capacity to absorb moisture, retain oxygen, and high specific surface area make it more prone to microbial contamination, becoming an appropriate medium for the growth of bacteria and fungi. In recent years, the incorporation of silver nanoparticles in textile products has been widely used due to their broad-spectrum antibacterial activity and low toxicity towards mammalian cells. The aim of the current study is to synthesize and characterize a nanocomposite based on silver nanoparticles and carboxymethyl chitosan (AgNPs-CMC), which was utilized to provide a functional finish to cotton fabric. The scanning electron microscope (SEM) to produce a scanning transmission electron microscope (STEM) image showed that the nanocomposite presents AgNPs with a 5–20 nm size. The X-ray diffraction (XRD) analysis confirmed the ...
6
artículo
Publicado 2022
Enlace
Enlace
Cotton is the most widely used natural fiber for textiles but its innate capacity to absorb moisture, retain oxygen, and high specific surface area make it more prone to microbial contamination, becoming an appropriate medium for the growth of bacteria and fungi. In recent years, the incorporation of silver nanoparticles in textile products has been widely used due to their broad-spectrum antibacterial activity and low toxicity towards mammalian cells. The aim of the current study is to synthesize and characterize a nanocomposite based on silver nanoparticles and carboxymethyl chitosan (AgNPs-CMC), which was utilized to provide a functional finish to cotton fabric. The scanning electron microscope (SEM) to produce a scanning transmission electron microscope (STEM) image showed that the nanocomposite presents AgNPs with a 5–20 nm size. The X-ray diffraction (XRD) analysis confirmed the ...
7
objeto de conferencia
We present the simulation of the application of the Model-based Predictive Control (MPC) of the drum level in a Combined Cycle Plant in order to minimize the time for reaching the highest capacity of plant, around 225 MW. In contrast to others control techniques, our simulation yields that the MPC has shown capabilities as to reach its expected power in about 40 minutes before than PID, time which normally takes the whole industrial process under this control. In the present study, we have tested up to three different reference functions in order to compare performance during the drum level control. According to the simulations, the MPC working together with these reference functions is seen to be promising in the sense of providing efficiency to the plant from the startup until the time when system is reaching 225 MW. We have also calculated a minor discrepancy of order of lees than 5%.
8
artículo
Blockchain technology is expected to change the way in which the exchange of goods and services is developed, the management of conflicts, and will substantially influence the process of state modernisation. The current research aims to be a simple organisational and theoretical guide that provides a strategy for the process of conflict management in the state sphere. This is based on the imperative need to modernise the current public system, based on the division of powers. This article fundamentally emphasises three concordant ideas: first, that blockchain technology helps to automate certain tasks, thus facilitating access to a decentralised space independent of a central control authority. It democratises and makes management and decision-making processes transparent, allowing all those involved to be examined on an equal footing, and third, it aims to maintain the necessary manual ...
9
artículo
Publicado 2022
Enlace
Enlace
A novel design procedure for tuned mass dampers in isolated structures is presented. The proposed optimization method is specifically developed to control base displacements or to solve the large isolator displacement problem in this type of structures under earthquakes. Therefore, it is based on a displacement transmissibility function, T, a particular case of the general transmissibility concept, which comes from Vibration Isolation. Three contributions are: 1) application of new seismic displacement narrowbandness, 2) simpler relative transmissibility function, and 3) compound design of isolation plus tuned mass damper. A standard isolated model is used to show that the base displacement can be controlled at levels in the proximity of the ground motion (T ≈ 1), which results in a positive comparison with previous isolation plus tuned mass damper solutions; this is one of the main co...
10
tesis de maestría
Publicado 2019
Enlace
Enlace
This master thesis is devoted to the design, analysis, and experimental validation of an energy-based control strategy for the well-known benchmark cart-pole system in implicit Port-Hamiltonian (PH) representation. The control scheme performs two tasks: swingup and (local) stabilization. The swing-up controller is carried out on the basis of a generalized energy function and consists of bringing the pendulum trajectories from the lower (stable) position to a limit cycle (homoclinic orbit), which passes by the upright (unstable) position, as well as the cart trajectories to the desired point. The (local) stabilizing controller is designed under a novel algebraic Interconnection and Damping Assignment Passivity-Based Control (IDA-PBC) technique and ensures the upright (asymptotic) stabilization of the pendulum as well as the cart at a desired position. To illustrate the effectiveness of th...
11
tesis de maestría
Publicado 2019
Enlace
Enlace
This master thesis is devoted to the design, analysis, and experimental validation of an energy-based control strategy for the well-known benchmark cart-pole system in implicit Port-Hamiltonian (PH) representation. The control scheme performs two tasks: swingup and (local) stabilization. The swing-up controller is carried out on the basis of a generalized energy function and consists of bringing the pendulum trajectories from the lower (stable) position to a limit cycle (homoclinic orbit), which passes by the upright (unstable) position, as well as the cart trajectories to the desired point. The (local) stabilizing controller is designed under a novel algebraic Interconnection and Damping Assignment Passivity-Based Control (IDA-PBC) technique and ensures the upright (asymptotic) stabilization of the pendulum as well as the cart at a desired position. To illustrate the effectiveness of th...
12
artículo
Publicado 2016
Enlace
Enlace
This paper involves a practical approach to perform quality-control/quality-assessment of concrete using vibration-based NDT. The first component is the analysis of compressive strength and dynamic E-modulus of concrete samples from various construction projects. The second component involves continuous measurements of E-Moduli as a function of curing time in laboratory-controlled specimens. The experimental program allowed proposing a correlation to predict the expected static and dynamic E-modulus at 28 days from their measurement at any instant of the curing process. A similar relationship is proposed to predict compressive strength at 28 days based on the dynamic E-modulus measured at earlier ages.
13
artículo
Publicado 2000
Enlace
Enlace
Este artículo presenta un trabajo preliminar acerca de la implementación de un Scanlet para: (a) chequeo automático de generación de patrones relacionados con circuitos digitales basados en un modelo con interrupción en presencia de falla, (b) monitoreo y depuración in situ, (c) actualización de la arquitectura de un controlador lógico difuso, y (d) inyección de falla a nivel de pines usando Java API. Los puntos (a)-(c) son tareas de verificación. Como primera aproximación, el sistema STUD ha sido desarrollado empleando la arquitectura (incorporada) JTAG (Joint Test Action Group) y configurada por un CPLD para chequeo y operaciones de programación. Entretanto, las operaciones son ejecutadas por Scanlet, el cual puede ser corrido desde una página de Internet. Finalmente, un controlador lógico difuso, a manera de un núcleo JP, se usa como marca característica.
14
artículo
Publicado 2018
Enlace
Enlace
In 2013, there were 25.7 million stroke survivors and 6.5 million stroke-related deaths. Previous studies have indicated that approximately 40% of stroke survivors remain with functional impairments and need physical rehabilitation. However, many barriers could limit access to continuous physical rehabilitation for these patients, so devices that complement or assist in the rehabilitation process can be of great help. The quality, safety and efficacy of medical devices should be evaluated in randomized controlled trials (RCTs). However, the efficacy of many medical devices entering the market in the United States and the European Union (EU) has not been evaluated. Unproven post-stroke rehabilitation devices could be useless or even harmful to patients, thereby increasing healthcare costs. Previous studies have found that post-stroke rehabilitation devices without a rigorous evidence base...
15
artículo
Publicado 2000
Enlace
Enlace
This article presents preliminary work on the implementation of a Scanlet for: (a) automatic checking of pattern generation related to digital circuits based on amodel with interruption in the presence of failure, (b) in situ monitoring and debugging, (c) update ofthe architecture of a fuzzy logic controller, and (d) pin-level fault injection using JavaAPI. Points (a)-(c) are verification tasks. As a first approximation, the STUD system has been developed using the (built-in) JTAG (Joint Test Action Group) architecture and configured by a CPLD for testing and programming operations. Meanwhile, the operations are executed by Scanlet, which can be run from an Internet page. Finally, a fuzzy logic controller, like an IP core, is used as a trademark.
16
artículo
Publicado 2024
Enlace
Enlace
The most controversial institution incorporated into the Criminal Procedure Code of 2004 was the sentence of the acquitted, which is the power that the Superior Criminal Chamber has, when resolving the appeal that may have been filed against a previous acquittal sentence issued in favor of the accused (first instance), in being able to amend it in a conviction against this same procedural subject (second instance), sentencing decision that originally could only be questioned by means of the appeal of cassation. However, the national legislator, through Law No. 31592 of October 26th 2022, has decided to briefly reform this adjective norm, where the legal novelty is that this convicted person has the possibility of challenging his sentence via a new appeal, in which the Criminal Chamber of the Supreme Court is enabled to act as a judicial instance, this according to the exclusive rules of ...
17
artículo
Publicado 2024
Enlace
Enlace
The most controversial institution incorporated into the Criminal Procedure Code of 2004 was the sentence of the acquitted, which is the power that the Superior Criminal Chamber has, when resolving the appeal that may have been filed against a previous acquittal sentence issued in favor of the accused (first instance), in being able to amend it in a conviction against this same procedural subject (second instance), sentencing decision that originally could only be questioned by means of the appeal of cassation. However, the national legislator, through Law No. 31592 of October 26th 2022, has decided to briefly reform this adjective norm, where the legal novelty is that this convicted person has the possibility of challenging his sentence via a new appeal, in which the Criminal Chamber of the Supreme Court is enabled to act as a judicial instance, this according to the exclusive rules of ...
18
tesis de grado
Publicado 2009
Enlace
Enlace
En el presente trabajo se presenta una propuesta metodológica que contribuye al planeamiento estratégico de las organizaciones al convertir esta actividad en un proceso menos complejo, más lógico, cuantitativo y sistematizado que permite simultáneamente una adecuada priorización de las decisiones estratégicas en base a información relevante. El modelo incorpora una innovadora propuesta de aplicación del QFD (Quality Function Deployment) como herramienta metodológica que permite identificar y desplegar las metas y los objetivos estratégicos de mayor impacto para los fines de la organización. El QFD es reconocido como una metodología que se aplica en el diseño de productos/procesos y que actualmente se esta extendiendo al diseño organizacional. El modelo se desarrolla aplicándolo a la Sección Ingeniería Mecánica, Departamento de Ingeniería de la Pontificia Universidad (...
19
tesis de grado
Publicado 2009
Enlace
Enlace
En el presente trabajo se presenta una propuesta metodológica que contribuye al planeamiento estratégico de las organizaciones al convertir esta actividad en un proceso menos complejo, más lógico, cuantitativo y sistematizado que permite simultáneamente una adecuada priorización de las decisiones estratégicas en base a información relevante. El modelo incorpora una innovadora propuesta de aplicación del QFD (Quality Function Deployment) como herramienta metodológica que permite identificar y desplegar las metas y los objetivos estratégicos de mayor impacto para los fines de la organización. El QFD es reconocido como una metodología que se aplica en el diseño de productos/procesos y que actualmente se esta extendiendo al diseño organizacional. El modelo se desarrolla aplicándolo a la Sección Ingeniería Mecánica, Departamento de Ingeniería de la Pontificia Universidad (...
20
artículo
An infant stimulation in mother-child relationship assessment scale (ISA Scale) was developed, based on a classification of probable effects on child's behavior, such as behavioral promotion stimulation (BPS) and behavioral control stimulation (BCS), refering to mother action level to promote desirable behaviors and to control socially non desirable behaviors in child's behavior repertory. 540 mother-child dyads were evaluated. The construct validity tests showed significant correlations in item analysis, between subescales along with child development measures (social maturity and aggressiveness). In addition significant correlations (p<.05) were identified in validity tests showing criteria. On the other hand, the reliability tests indicated high stability and internal consistency. During this work we verified the important influence this stimulation had on the psychological develop...
