Neiva, Colombia

South Colombian University
Neiva, Colombia

The Universidad Surcolombiana , also known as USCO, is a public, national, university based primarily in the city of Neiva, Huila, Colombia. Wikipedia.

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Cabezas A.C.,South Colombian University | Patron J.J.S.,South Colombian University
ARPN Journal of Engineering and Applied Sciences | Year: 2017

In this paper we study the main performance characteristics of SMAC, a media access control protocol for sensor networks (WSN). SMAC was designed keeping in mind the characteristics of energy scarcity and processing capacity of the sensor nodes and achieves reduction in energy consumption at the expense of other performance parameters such as delay, throughput and bandwidth usage. Our contributions through this work are: first, a model of physical layer corresponding to the transmitter/receiver CC2420 radio including a model of energy consumption and a model of the SMAC protocol based on the specifications of the authors implemented in Qualnet® and second, a detailed analysis of protocol performance based on different metrics. Through our study we provide to designers of sensor networks operating parameters and performance information. © 2006-2017 Asian Research Publishing Network (ARPN). All rights reserved.

Orduz L.H.,South Colombian University
ARPN Journal of Engineering and Applied Sciences | Year: 2017

Every hydrocarbon well uses tools and equipment not only for drilling but also for well completion, stimulation and production activities; all equipment is tested at conditions of pressure and surface temperature before being lowered into the well, during the run and during program operation, all the equipment is exposed to pressures and temperatures and changes by fluid movements generating variations that can affect their behavior. In this document the changes to which they are exposed in the well and a condensed during the run in hole and during operations, with calculating regarding the proposed service by the company and some authors regard. © 2006-2016 Asian Research Publishing Network (ARPN). All rights reserved.

Otalora A.S.,South Colombian University | Ramirez H.R.S.,South Colombian University
ARPN Journal of Engineering and Applied Sciences | Year: 2017

The work involves the development of software able to calculate tractor data such as Power Take off (PTO) and Fuel consumption based on studies related to test Nebraska. The reason that motivates the development of this project is that it is necessary to know in greater depth certain characteristic tractor data in order to gain a deeper understanding of the behavior of this in works like tilling soil and under different conditions as to power requirements and fuel consumption, so that it can give greater control to the use of this carrying an analysis on the data produced by the program. The software develops mathematical calculations based on certain known data which are provided by the manufacturer of the tractor to be assessed. The program processes the data and throws us numerical results and in most cases representative graphs that help us analyze the behavior of certain features of the tractor as are PTO and Fuel consumption; data that help us predict the behavior of the tractor in certain specific jobs, it provides the possibility to know the fuel consumption and costs generated in this work. © 2006-2017 Asian Research Publishing Network (ARPN).

Cabezas A.C.,South Colombian University | Patron J.J.S.,South Colombian University
ARPN Journal of Engineering and Applied Sciences | Year: 2017

Nowadays many health centers in the world have robust hospital information systems capable of storing and processing the collected data of all type of variables associated to the different medical and laboratory tests that are made to the users of the service. A hospital information system enables the integrity and readability of patient information to be guaranteed. In addition, it makes it possible for such information to be available at the point of care where the patient is, independently of the institution providing health services where it is attended. Unfortunately, hospitals in Huila do not yet have an adequate information system, so that old-fashioned, complex and unstructured methods are used, such as handwriting the results of tests performed in paper formats, which are then examined and analyzed by the attending physician and then make the relevant decisions. In this project, an information system was implemented to optimize the process of glucose testing (glucometry) in hospitals in Huila to improve the organization of data, making access much more comfortable. The HL7 standard set was used as a guide for good interoperability and to make the system scalable. Access can be made through a mobile application, which was developed using Android Studio or through a website. The information system allows access to the data of a specific patient and also has the option of graphing them to observe the evolution of glucose levels over time and thus provide the appropriate treatments for each case. © 2006-2017 Asian Research Publishing Network (ARPN).

The molecularization of Biopolitics substantiates how in contemporary societies, based on the achievements of biotechnological industry and the great possibilities of results’ applications, the body is built by making visible the invisible instead of an assembly of its parts: the genes. This brings about that the interest is not centered in disease but in “risk”, its control and modification. An example of the abovementioned is seen in the development of tools to identify precise molecular biomarkers BRCA 1/2 capable of identifying and quantifying the “inherited risk” of breast cancer in women with family history of this disease. Therefore, an analysis of the emergence of the new female subjectivities, resulting from such life molecularization, was suggested: the discursive practices of “survival optimization” and the practices of resistance, the “surveillance” and the “biological citizenships” built from the bottom. © 2017, Editorial Ciencias Medicas. All rights reserved.

Sendoya-Losada D.F.,South Colombian University | Triana E.S.,South Colombian University
ARPN Journal of Engineering and Applied Sciences | Year: 2017

This project focuses on the design and implementation of a prototype to track the bus route of the Antonio Nariño University - campus Villavicencio. The prototype was developed from a Web application for tracking and locating the georeferenced position of system actors (drivers and members of the educational community); and a mobile application, which allows users to know vehicle location data and an estimate of the actual travel time. Applying and evaluating the developed prototype, it was possible to establish that it is functional. The service provided to the users is efficient and generates a great benefit to the entire university community. In addition, it encourages the use of the transportation system because it is easier to access the service, without having to wait a long time in the indicated points and avoiding inconveniences such as the loss of travel and additional costs to go to the University. © 2006-2017 Asian Research Publishing Network (ARPN). All rights reserved.

Kovacs F.M.,Fundacion Kovacs | Urrutia G.,Biomedical Research Institute Sant Pau | Urrutia G.,CIBER ISCIII | Urrutia G.,Autonomous University of Barcelona | Alarcon J.D.,South Colombian University
Spine | Year: 2011

STUDY DESIGN.: Systematic review. OBJECTIVE.: To compare the effectiveness of surgery versus conservative treatment on pain, disability, and loss of quality of life caused by symptomatic lumbar spinal stenosis (LSS). SUMMARY OF BACKGROUND DATA.: LSS is the most common reason for spine surgery in persons older than 65 years in the United States. METHODS.: Randomized controlled trials (RCTs) comparing any form of conservative and surgical treatment were searched in CENTRAL, MEDLINE, EMBASE, and TripDatabase databases until July 2009, with no language restrictions. Additional data were requested from the authors of the original studies. The methodological quality of each study was assessed independently by two reviewers, following the criteria recommended by the Cochrane Back Review Group. Only data from randomized cohorts were extracted. RESULTS.: A total of 739 citations were reviewed. Eleven publications corresponding to five RCTs were included. All five scored as high quality despite concerns deriving from heterogeneity of treatment, lack of blinding, and potential differences in the size of the placebo effect across groups. They included a total of 918 patients in whom conservative treatments had failed for 3 to 6 months, and included orthosis, rehabilitation, physical therapy, exercise, heat and cold, transcutaneous electrical nerve stimulation, ultrasounds, analgesics, nonsteroidal anti-inflammatory drugs, and epidural steroids. Surgical treatments included the implantation of a specific type of interspinous device and decompressive surgery (with and without fusion, instrumented or not). In all the studies, surgery showed better results for pain, disability, and quality of life, although not for walking ability. Results of surgery were similar among patients with and without spondylolisthesis, and slightly better among those with neurogenic claudication than among those without it. The advantage of surgery was noticeable at 3 to 6 months and remained for up to 2 to 4 years, although at the end of that period differences tended to be smaller. CONCLUSION.: In patients with symptomatic LSS, the implantation of a specific type of device or decompressive surgery, with or without fusion, is more effective than continued conservative treatment when the latter has failed for 3 to 6 months. © 2011, Lippincott Williams &Wilkins.

Rodriguez-Calderon W.,University of la Salle of Colombia | Pallares-Munoz M.R.,South Colombian University
DYNA (Colombia) | Year: 2015

The model developed tries to predict the stresses and strains of the structure of the pavement in a more real way, doing a lineal elastic structural analysis in three dimensions with capacity to model loads of double axes, that which constitutes an advance regarding twodimensional axisymmetrical models that only represent the state tense-deformational of the pavement under loads of simple axes. Earlier stages of this research showed two-dimensional models under different load scenarios, league between layers and nonlinear constitutive models, however the purpose is to move towards analysis methodology stress-strain state under standard loads. The model was implemented in the Algor© program and a comparison with the Elsym5 multilayer freeware was performed. The results warn the existence of shear stress concentrations that can be causing major flaws that are not considered in traditional design methods which could lead to the possibility of reassessed. © The author; licensee Universidad Nacional de Colombia.

Kesinger M.R.,University of Pittsburgh | Puyana J.C.,University of Pittsburgh | Rubiano A.M.,South Colombian University
World Journal of Surgery | Year: 2014

Background: Standardized trauma protocols (STPs) have reduced morbidity and mortality in mature trauma systems. Most hospitals in low- and middle-income countries (LMICs) have not yet implemented such protocols, often due to financial and logistic limitations. We report preliminary findings from a trauma quality improvement (QI) initiative, using and evaluating the impact of a low-cost STP in an LMIC university hospital. Methods: We developed an STP based on generally accepted best practices and damage control resuscitation. It was designed for the resources available at the test institution. The Neiva University Hospital (NUH) is a tertiary care hospital and level I trauma center in Neiva, Colombia. As in most LMIC hospitals, there was no trauma information data system at NUH. Therefore, we adapted an administrative electronic database to capture clinically relevant information of adult patients who were hospitalized or died in the emergency department (ED) between August 2010 and June 2012 with an International Classification of Diseases, 10th revision (ICD-10) diagnoses indicating trauma (S00-Y98). Interventions that were recommended in the STP were compared in these two groups. Length of hospital stay (LOS) and mortality were also examined. Results: A total of 4,324 patients were included, of whom, 2,457 patients were in the pre-protocol period and 1,867 were in the post-protocol period. The use of several interventions increased: blood product transfusions in the ED (1.0 vs. 2.7 %; p < 0.001), use of hypertonic fluids in hypotensive patients (3.2 vs. 8.9 %; p < 0.001), placement of Foley catheters (11.1 vs. 13.8 %; p = 0.007), arterial blood gas draws (16.6 vs. 26.4 %; p < 0.001), tetanus vaccinations (19.3 vs. 26.0 %; p < 0.001), placement of multiple large bore peripheral catheters (29.5 vs. 34.7 %; p < 0.001), prophylactic antibiotics (34.9 vs. 38.0 %; p = 0.035), and the use of analgesics (64.5 vs. 68.0 %; p = 0.016). Other interventions also trended upwards. Length of stay (LOS) decreased for both surgical and non-surgical patients (surgical 13.4 vs. 11.8 days; p = 0.017; non-surgical 4.4 vs. 3.8 days; p = 0.059). All-cause mortality of trauma patients decreased (3.9 vs. 2.9 %; p = 0.088). Conclusions: The institution of an STP at a university hospital in an LMIC has increased the use of vital interventions while decreasing overall LOS for all-cause trauma patients. © 2014 Société Internationale de Chirurgie.

Salgado D.,South Colombian University | Zabaleta T.E.,South Colombian University | Hatch S.,University of Massachusetts Medical School | Vega M.R.,South Colombian University | Rodriguez J.,South Colombian University
Pediatric Infectious Disease Journal | Year: 2012

The current treatment for dengue hemorrhagic fever largely consists of supportive care. The drug pentoxifylline has been shown to blunt the proinflammatory actions of tumor necrosis factor-α, a key mediator of dengue hemorrhagic fever. We performed a pilot study evaluating pentoxifylline's effect on 55 children with dengue hemorrhagic fever. We believe our findings support the existing literature on its potential use in severe infection. © 2012 by Lippincott Williams ∧ Wilkins.

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