The constant evolution of mobile devices and Information Technologies allows users to enjoy a new... more The constant evolution of mobile devices and Information Technologies allows users to enjoy a new variety of features that were unimaginable some years ago. In this sense, Ambient Intelligence (AmI) has emerged as a new discipline focused on people and aimed at facilitating their daily activities. This paper proposes a new definition model that helps designers to characterize collaborative e-learning systems based on AmI and Computer Supported Collaborative Learning. The use of mobile devices and Mobile Adhoc Networks is a key aspect in this model as they allow users to access resources from anywhere on demand. The proposed model is applied to a concrete case of study as an example of its application on real scenarios.
This paper presents the SHOMAS multiagent system that provides guidance on leisure facilities and... more This paper presents the SHOMAS multiagent system that provides guidance on leisure facilities and suggestions for shopping in malls. The multiagent architecture incorporates reactive and deliberative agents that take decisions automatically. This paper presents a deliberative agent that provides suggestions in execution time, with the help of case-based planners. This agent is described together with its guidance and suggestion mechanism. SHOMAS has been tested successfully, and the results obtained are presented in this paper.
Compiling is not only running a program that interprets a given source file collection. In the co... more Compiling is not only running a program that interprets a given source file collection. In the compilation process, it is important the immediacy and way of display the results, and the user interaction. In this research it is proposed the creation of a unified platform (.Cloud) that supports editing, compiling and running applications in multiple languages and that can execute directly into the user's browser without installing any plugins, making it independent of the platform and operating system used. .Cloud will be independent of the platform on which it runs, which will favor mainly to devices with limited resources, both hardware and platform software. The use of a Cloud tool of this type also facilitates the work group within computing projects, allowing multiple programmers working on the same data with optimized workflow.
Transient episodes of apnea and bradycardia are common in preterm infants. Pronounced asystole or... more Transient episodes of apnea and bradycardia are common in preterm infants. Pronounced asystole or sinus arrest, however, is relatively rare and the clinical significance of such events is unknown. The purpose of our study was to: (1) evaluate the prevalence of severe bradycardic and asystolic events in infants studied with polygraphic cardiorespiratory monitoring, (2) characterize these events, and (3) correlate the events with other clinical findings. A total of 583 studies were performed in 454 preterm infants at a post-conceptional age 37.4 +/- 2.5 (range 34-42 weeks). Asystolic pauses were defined as no QRS complex for >or=3 s consistent with a heart rate <20 beats per minute (bpm). Severe bradycardia was defined as no QRS for >or=2 s consistent with a heart rate of 21-30 bpm. Eight infants (29.5 +/- 3.9 weeks' gestational age, birth weight 1,283 +/- 445 g) met the criteria of having had at least 1 asystolic event (heart rate <or=20 bpm). These infants had a total of 32 episodes of bradycardia <or=30 bpm, of which 22 episodes were classified as asystole. During the asystolic episodes, the P-R interval remained unchanged in 21 of 22 episodes and prolonged in 1. One patient had non-sustained ventricular tachycardia before resumption of normal sinus rhythm. All asystolic events were associated with apnea (mean…
The rat pars tuberalis was studied with conventional electron microscopy and immunocytochemistry ... more The rat pars tuberalis was studied with conventional electron microscopy and immunocytochemistry for the demonstration of luteinizing hormone (LH). The LH-secreting cells were preferentially located in two regions of the pars tuberalis (PT), namely, that surrounding the neural stalk and that occupying the tuberoinfundibular sulci. Dialyzed extracts of PT prepared after removal of the pituitary stalk, had the capacity to induce ovulation in chlorpromazine-blocked rats in proestrus. In radioimmunoassays carried out under the same conditions, the PT extracts yielded displacement curves parallel to those of standard LH. The immunoreactive LH content of the female PT was determined at three phases of the estrous cycle: diestrus, afternoon of proestrus and estrus. The lowest values were found in rats sacrificed in the evening of proestrus (18.00 h), and they were about one sixth of the peak values found at estrus. 1 month after inducing lesions in the preoptic area of female rats, the LH content of the PT was four times higher than the highest values found during the estrous cycle. The results suggest that the rat PT does secret LH, and that this secretory activity fluctuates with the estrous cycle, but in a manner that differs from that reported for LH secretion of the pars distalis.
The constant evolution of mobile devices and Information Technologies allows users to enjoy a new... more The constant evolution of mobile devices and Information Technologies allows users to enjoy a new variety of features that were unimaginable some years ago. In this sense, Ambient Intelligence (AmI) has emerged as a new discipline focused on people and aimed at facilitating their daily activities. This paper proposes a new definition model that helps designers to characterize collaborative e-learning systems based on AmI and Computer Supported Collaborative Learning. The use of mobile devices and Mobile Adhoc Networks is a key aspect in this model as they allow users to access resources from anywhere on demand. The proposed model is applied to a concrete case of study as an example of its application on real scenarios.
This paper presents the SHOMAS multiagent system that provides guidance on leisure facilities and... more This paper presents the SHOMAS multiagent system that provides guidance on leisure facilities and suggestions for shopping in malls. The multiagent architecture incorporates reactive and deliberative agents that take decisions automatically. This paper presents a deliberative agent that provides suggestions in execution time, with the help of case-based planners. This agent is described together with its guidance and suggestion mechanism. SHOMAS has been tested successfully, and the results obtained are presented in this paper.
Compiling is not only running a program that interprets a given source file collection. In the co... more Compiling is not only running a program that interprets a given source file collection. In the compilation process, it is important the immediacy and way of display the results, and the user interaction. In this research it is proposed the creation of a unified platform (.Cloud) that supports editing, compiling and running applications in multiple languages and that can execute directly into the user's browser without installing any plugins, making it independent of the platform and operating system used. .Cloud will be independent of the platform on which it runs, which will favor mainly to devices with limited resources, both hardware and platform software. The use of a Cloud tool of this type also facilitates the work group within computing projects, allowing multiple programmers working on the same data with optimized workflow.
Transient episodes of apnea and bradycardia are common in preterm infants. Pronounced asystole or... more Transient episodes of apnea and bradycardia are common in preterm infants. Pronounced asystole or sinus arrest, however, is relatively rare and the clinical significance of such events is unknown. The purpose of our study was to: (1) evaluate the prevalence of severe bradycardic and asystolic events in infants studied with polygraphic cardiorespiratory monitoring, (2) characterize these events, and (3) correlate the events with other clinical findings. A total of 583 studies were performed in 454 preterm infants at a post-conceptional age 37.4 +/- 2.5 (range 34-42 weeks). Asystolic pauses were defined as no QRS complex for >or=3 s consistent with a heart rate <20 beats per minute (bpm). Severe bradycardia was defined as no QRS for >or=2 s consistent with a heart rate of 21-30 bpm. Eight infants (29.5 +/- 3.9 weeks' gestational age, birth weight 1,283 +/- 445 g) met the criteria of having had at least 1 asystolic event (heart rate <or=20 bpm). These infants had a total of 32 episodes of bradycardia <or=30 bpm, of which 22 episodes were classified as asystole. During the asystolic episodes, the P-R interval remained unchanged in 21 of 22 episodes and prolonged in 1. One patient had non-sustained ventricular tachycardia before resumption of normal sinus rhythm. All asystolic events were associated with apnea (mean…
The rat pars tuberalis was studied with conventional electron microscopy and immunocytochemistry ... more The rat pars tuberalis was studied with conventional electron microscopy and immunocytochemistry for the demonstration of luteinizing hormone (LH). The LH-secreting cells were preferentially located in two regions of the pars tuberalis (PT), namely, that surrounding the neural stalk and that occupying the tuberoinfundibular sulci. Dialyzed extracts of PT prepared after removal of the pituitary stalk, had the capacity to induce ovulation in chlorpromazine-blocked rats in proestrus. In radioimmunoassays carried out under the same conditions, the PT extracts yielded displacement curves parallel to those of standard LH. The immunoreactive LH content of the female PT was determined at three phases of the estrous cycle: diestrus, afternoon of proestrus and estrus. The lowest values were found in rats sacrificed in the evening of proestrus (18.00 h), and they were about one sixth of the peak values found at estrus. 1 month after inducing lesions in the preoptic area of female rats, the LH content of the PT was four times higher than the highest values found during the estrous cycle. The results suggest that the rat PT does secret LH, and that this secretory activity fluctuates with the estrous cycle, but in a manner that differs from that reported for LH secretion of the pars distalis.
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Papers by Sara Rodriguez