Economia digital : una sortida per a múltiples sistemes comercials

Economia Digital: Una sortida per a múltiples sistemes comercials, és un treball de recerca que tracta sobre el comerç electrònic en tots els seus aspectes, partint d’un anàlisi teòric que estableix les bases d’aquest sistema comercial; seguit d’un estudi de dos casos concrets d’empreses que han introduït Internet en la seva activitat. Per una banda, una d’aquestes empreses, Destil·leries Julián Segarra, s’ha servit de les noves tecnologies, amb un ús publicitari, per tal de donar-se a conèixer però sense oferir la possibilitat de venda online. D’altra banda, Surfdevils S.L. no només utilitza els recursos que ofereix la xarxa de manera informativa, sinó que va més enllà i permet adquirir els seus productes mitjançant el seu espai web. A més es realitza un breu estudi sobre els hàbits de compra per Internet, mitjançant una enquesta efectuada a una mostra de la població.Tot aquest estudi, serveix per arribar a la conclusió que introduir el comerç electrònic dins del seu funcionament és rentable per a les empreses i beneficiós pels consumidors, ja que els ofereix la possibilitat d’adquirir els productes en un mercat més ampli, transparent i competitiu.

Dual-wavelength digital holographic microscopy with sub-nanometer axial accuracy

We present dual-wavelength Digital Holographic Microscopy (DHM) measurements on a certified 8.9 nm high Chromium thin step sample and demonstrate sub-nanometer axial accuracy. We introduce a modified DHM Reference Calibrated Hologram (RCH) reconstruction algorithm taking into account amplitude contributions. By combining this with a temporal averaging procedure and a specific dual-wavelength DHM arrangement, it is shown that specimen topography can be measured with an accuracy, defined as the axial standard deviation, reduced to at least 0.9 nm. Indeed, it is reported that averaging each of the two wavefronts recorded with real-time dual-wavelength DHM can provide up to 30% spatial noise reduction for the given configuration, thanks to their non-correlated nature. ©2008 COPYRIGHT SPIE

Perfil, competências e fluência digital dos enfermeiros do Programa de Aprimoramento Profissional

Estudo descritivo, exploratório, realizado na cidade de São Paulo, que objetivou identificar o perfil, as competências e a fluência digital do enfermeiro aprimorando para uso da tecnologia no trabalho. A população composta por 60 aprimorandos do Programa de Aprimoramento Profissional respondeu um questionário com dados sobre o perfil, a fluência digital e as competências profissionais. Verificou-se que 95,0% dos participantes eram do sexo feminino, 61,7% na faixa etária entre 23 a 25 anos, 75,0% graduados em escolas públicas, 58,3% cursando enfermagem cardiovascular, 98,3% teve contato com recursos computacionais na graduação; 100,0% possuía computador em casa; 86,7% acessava a internet diariamente; 96,7% utilizava o Messenger e 58,3% apresentava grau intermediário de conhecimento e habilidade em informática. As competências profissionais requeridas frente à tecnologia referiram-se ao saber ser inovador, criativo, atualizado para conhecer e gerenciar programas e saber utilizar os recursos tecnológicos.

Técnicas de Data e Text Mining Para Anotação de Um Arquivo Digital

O presente trabalho cujo Título é técnicas de Data e Text Mining para a anotação dum Arquivo Digital, tem como objectivo testar a viabilidade da utilização de técnicas de processamento automático de texto para a anotação das sessões dos debates parlamentares da Assembleia da República de Portugal. Ao longo do trabalho abordaram-se conceitos como tecnologias de descoberta do conhecimento (KDD), o processo da descoberta do conhecimento em texto, a caracterização das várias etapas do processamento de texto e a descrição de algumas ferramentas open souce para a mineração de texto. A metodologia utilizada baseou-se na experimentação de várias técnicas de processamento textual utilizando a open source R/tm. Apresentam-se, como resultados, a influência do pré-processamento, tamanho dos documentos e tamanhos dos corpora no resultado do processamento utilizando o algoritmo knnflex.

Evaluation of digital educational studenttechnology interaction in neonatal nursing

OBJECTIVE To assess the digital educational technology interface Caring for the sensory environment in the neonatal unit: noise, lighting and handling based on ergonomic criteria. METHODS Descriptive study, in which we used the guidelines and ergonomic criteria established by ISO 9241-11 and an online Likert scale instrument to identify problems and interface qualities. The instrument was built based on Ergolist, which follows the criteria of ISO 9141-11. There were 58 undergraduate study participants from the School of Nursing of Ribeirao Preto, University of Sao Paulo, who attended the classes about neonatal nursing content. RESULTS All items were positively evaluated by more than 70% of the sample. CONCLUSION Educational technology is appropriate according to the ergonomic criteria and can be made available for teaching nursing students.

Effects of web-based electrocardiography simulation on strategies and learning styles

OBJECTIVETo identify the association between the use of web simulation electrocardiography and the learning approaches, strategies and styles of nursing degree students.METHODA descriptive and correlational design with a one-group pretest-posttest measurement was used. The study sample included 246 students in a Basic and Advanced Cardiac Life Support nursing class of nursing degree.RESULTSNo significant differences between genders were found in any dimension of learning styles and approaches to learning. After the introduction of web simulation electrocardiography, significant differences were found in some item scores of learning styles: theorist (p < 0.040), pragmatic (p < 0.010) and approaches to learning.CONCLUSIONThe use of a web electrocardiogram (ECG) simulation is associated with the development of active and reflexive learning styles, improving motivation and a deep approach in nursing students.

Spacial debris collector robot : An AI-based and autonomous debris collector satellite simulation

In this paper the core functions of an artificial intelligence (AI) for controlling a debris collector robot are designed and implemented. Using the robot operating system (ROS) as the base of this work a multi-agent system is built with abilities for task planning.

Uso de las herramientas 2.0 en el periodismo deportivo digital en Cataluña

El ciberperiodismo ha evolucionado, desde una etapa facsimilar, hasta su estado actual en el que aprovecha mejor los recursos de Internet y se diferencia del periodismo en soporte físico. El surgimiento de la Web 2.0 supone para los medios digitales y los estudiosos de la comunicación un aprendizaje y adaptación constantes. El acelerado cambio que ha caracterizado a estas nuevas tecnologías de la información ha causado que los cibermedios comenzaran a utilizarlas sin establecer estrategias ni objetivos previos; en su lugar, los han ido desarrollando y mejorando sobre la base de la experiencia, para así explotar al máximo el potencial que ofrecen. El presente estudio comprende una investigación descriptiva de tipo empírico y de carácter cuantitativo sobre el uso de estas plataformas que ejercen los medios deportivos on-line editados en Cataluña.

SIMULIT : un modèle de simulation pour l'analyse et la planification de l'activité hospitalière

Le modèle développé à l'Institut universitaire de médecine sociale et préventive de Lausanne utilise un programme informatique pour simuler les mouvements d'entrées et de sorties des hôpitaux de soins généraux. Cette simulation se fonde sur les données récoltées de routine dans les hôpitaux; elle tient notamment compte de certaines variations journalières et saisonnières, du nombre d'entrées, ainsi que du "Case-Mix" de l'hôpital, c'est-à-dire de la répartition des cas selon les groupes cliniques et l'âge des patients.

Rock urbano, comunicación y autenticidad en el entorno digital actual

En este proyecto se pretende realizar un estudio sobre la transmisión del concepto de autenticidad de la música rock a través de Internet, focalizándolo en el llamado rock urbano español en la actualidad. Para ello se estudiará la bibliografía existente sobre el concepto de autenticidad en la música popular, con el fin de determinar unas categorías generales, que posteriormente nos servirán para analizar la red y obtener correlaciones

La Alfabetización digital mediática y el reto de las TIC en Colombia : diagnóstico y análisis de las principales iniciativas educomunicativas en el escenario 2.0

Històricament la inserció de Colombia a les TIC i al desenvolupament que aquestes comporten va ser lenta. Tot i això, als últims anys s'han desenvolupat projectes de infraestructura i apropiació tecnològica a grans velocitats. En aquest escenari la educomunicació ha avançat de manera formidable i la web colombiana comença a nodrir-se de continguts abundants i de qualitat per a l'educació. Aquest treball examina les principals iniciatives 2.0 per a l'educomunicació i dóna un diagnòstic sobre la seva funcionalitat (progressos i carències). Finalment, dóna una serie de recomanacions per al correcte ús de les eines que ofereix la web 2.0

Intravenous streptomycin dosing regimen in a patient undergoing hemodialysis: Plasma level monitoring and pharmacokinetic simulation

Introduction: Streptomycin, as other aminoglycosides, exhibits concentration-dependent bacterial killing but has a narrow therapeutic window. It is primarily eliminated unchanged by the kidneys. Data and dosing information to achieve a safe regimen in patients with chronic renal failure undergoing hemodialysis (HD) are scarce. Although main adverse reactions are related to prolonged, elevated serum concentrations, literature recommendation is to administer streptomycin after each HD. Patients (or Materials) and Methods: We report the case of a patient with end-stage renal failure, undergoing HD, who was successfully treated with streptomycin for gentamicin-resistant Enterococcus faecalis bacteremia with prosthetic arteriovenous fistula infection. Streptomycin was administered intravenously 7.5 mg/kg, 3 hours before each dialysis (3 times a week) during 6 weeks in combination with amoxicillin. Streptomycin plasma levels were monitored with repeated blood sampling before, after, and between HD sessions. A 2-compartment model was used to reconstruct the concentration time profile over days on and off HD. Results: Streptomycin trough plasma-concentration was 2.8 mg/L. It peaked to 21.4 mg/L 30 minutes after intravenous administration, decreased to 18.2 mg/L immediately before HD, and dropped to 4.5 mg/L at the end of a 4-hour HD session. Plasma level increased again to 5.7 mg/L 2 hours after the end of HD and was 2.8 mg/L 48 hours later, before the next administration and HD. The pharmacokinetics of streptomycin was best described with a 2-compartment model. The computer simulation fitted fairly well to the observed concentrations during or between HD sessions. Redistribution between the 2 compartments after the end of HD reproduced the rebound of plasma concentrations after HD. No significant toxicity was observed during treatment. The outcome of the infection was favorable, and no sign of relapse was observed after a follow-up of 3 months. Conclusion: Streptomycin administration of 7.5 mg/kg 3 hours before HD sessions in a patient with end-stage renal failure resulted in an effective and safe dosing regimen. Monitoring plasma levels along with pharmacokinetic simulation document the suitability of this dosing scheme, which should replace current dosage recommendations for streptomycin in HD.