874 research outputs found
[Real Cédula, 1803-12-06]
Se ha respetado la puntuación originalCopia certificada por Manuel RuifernándezPort. con esc. realCopia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-201
Ovarian follicular dynamics in repeat breeder cow: ultrasonography and progesterone level
The aim of this study was to examine follicular development patterns in eighteen repeat breeder cows through spontaneous oestrus cycles. Ovarian ultrasonographic examinations over 32 days after artificial insemination revealed that two follicular waves were the predominant patterns in animals with this syndrome (72.2 percent). Cycles with one or four waves rarely appeared. The ovulatory follicular diameter (day 0) was larger (p<0.01) in cycles with a small number of waves; no differences were detected between ovulatory and anovulatory dominant follicles. Progesterone plasmatic concentrations were determined by RIA and differences were not significant when cycles with two or three waves were compared. The number of follicular waves was higher (2 or 3 waves) with longer interovulatory intervals (22.3 ± 1.89 vs 23.0 ± 2.0; n.s.) and older cows (7.0 ± 2.64 vs 4.38 ± 1.66 years; p<0.05). Mean ovulatory follicular diameter was 1.78 ± 0.36 cm. It can be concluded that cows with the repeat breeder cow syndrome more frequently present two follicular wavesEl objetivo de este trabajo era caracterizar los patrones de desarrollo folicular en 18 vacas repetidoras de celos a lo largo de ciclos sexuales espontáneos. Se llevaron a cabo exámenes ecográficos de los ovarios durante 32 días posteriores a la inseminación, observándose que el patrón de dos ondas era el más frecuente en vacas repetidoras alcanzando un 72,2 p.100, mientras que los de 3 ondas estuvieron presentes en el 16,6 p.100 de los ciclos estudiados. Se registraron ciclos con 1 y 4 ondas, aunque esta condición es muy poco frecuente. El diámetro del folículo ovulatorio fue mayor en ciclos con menos número de ondas (p<0,01); no se detectaron diferencias entre folículos dominantes ovulatorios o anovulatorios. Las concentraciones de progesterona no mostraron diferencias entre los distintos patrones de crecimiento folicular. Se apreció que los ciclos con más ondas foliculares estaban acompañados de intervalos interovulatorios más largos y aparecía en vacas más viejas. El diámetro folicular ovulatorio medio alcanzó 1,78 ± 0,36 cm. Los resultados permiten afirmar que la dinámica folicular más frecuente en vacas repetidoras es la de dos ondas
The internationalisation of the Spanish SME sector
As part of a wider research program, we analysed the theoretical framework and the recent developments of the process of internationalisation (transnationalisation) of the small- and medium-sized enterprises in Spain. The paper highlights the main trends and barriers of this internationalisation process. Methodology included document analyses, interviews, and the analyses of statistical databases
¿Agroecología en la España despoblada?
Después de reflexionar sobre las dinámicas complementarias de creciente
concentración de la población en ciudades y despoblación rural, se describe el caso
de la iniciativa Activa Valverde. Un grupo de vecinos ha creado en este pequeño
pueblo de Extremadura una plataforma ciudadana para afrontar la posible
desaparición de la localidad, para lo que ha establecido fuertes vínculos con la
Universidad de Sevilla. La descripción de los actores implicados, las acciones y los
resultados preliminares de la iniciativa son parte de los resultados preliminares del
proceso.In this paper we reflect on the complementary demographic dynamics with
population increasingly concentrating in cities and rural depopulation. Afterwards we
describe the Activa Valverde initiative, in which a group of neighbors has created a
citizen platform to face the possible disappearance of this little town in
Extremadura. They have established strong links with the University of Seville. We
present a description of the actors involved, the actions and the preliminary results
of the initiative
Madonna With a Heart Scarred As a Face With Bad Maybe Smallpox
Aunque las pruebas de mutación son una técnica bien conocida para evaluar la calidad de las pruebas, no hay mucho apoyo disponible para el análisis de mutaciones a nivel de modelo. También se considera costoso debido a: (i) la gran cantidad de mutantes generados; (ii) la actividad lenta de determinar mutantes equivalentes; y (iii) el tiempo de ejecución mutante. También debe recordarse que los artefactos de software reales de tamaño apropiado, incluyendo fallas reales, son difíciles de encontrar y preparar adecuadamente. En este artículo, proponemos una herramienta de mutación para generar mutantes de primer orden (FOM) válidos para esquemas conceptuales (CS) basados en diagramas de clase UML y evaluar su efectividad y eficiencia en la generación de mutantes válidos y no equivalentes. Nuestros principales hallazgos fueron: (1 ) Los operadores de mutación FOM pueden automatizarse para evitar mutantes no válidos (49,1%). (2) Se generaron menos mutantes equivalentes (7,2%) y el 74,3% se redujo analizando la estructura estática de CS en seis CS de sujeto. © Springer International Publishing Suiza 2017.Although mutation testing is a well-known technique for assessing the quality of tests, there is not a lot of support available for model-level mutation analysis. It is also considered to be expensive due to: (i) the large number of mutants generated; (ii) the time-consuming activity of determining equivalent mutants; and (iii) the mutant execution time. It should also be remembered that real software artefacts of appropriate size including real faults are hard to find and prepare appropriately. In this paper we propose a mutation tool to generate valid First Order Mutants (FOM) for Conceptual Schemas (CS) based on UML Class Diagrams and evaluate its effectiveness and efficiency in generating valid and non-equivalent mutants.Our main findings were: (1) FOM mutation operators can be automated to avoiding non-valid mutants (49.1%). (2) Fewer equivalent mutants were generated (7.2%) and 74.3% were reduced by analysing the CS static structure in six subject CSs. © Springer International Publishing Switzerland 2017.Katowic
TulipaProfileFitting.jl: A Julia package for fitting renewable energy time series profiles
This paper introduces the TulipaProfileFitting.jl package, a tool developed
in Julia for generating renewable energy profiles that fit a specified capacity
factor. It addresses the limitations of naive methods in adjusting existing
profiles to match improved technology efficiency, particularly in scenarios
lacking detailed weather data or technology specifications. By formulating the
problem mathematically, the package provides a computationally efficient
solution for creating realistic renewable energy profiles based on existing
data. It ensures that the adjusted profiles realistically reflect the
improvements in technology efficiency, making it an essential tool for energy
modellers in analyzing -neutral energy systems
Cultivation of Gongolaria barbata (Fucales, Phaeophyceae) with a seaweed-derived biostimulant in order to improve photophysiological fitness and promote fertility to advance the restoration of marine macroalgal forests
As a result of several anthropogenic factors, Cystoseira sensu lato forests have declined or become regionally extinct in many coastal regions of the Mediterranean. Given the low natural recovery of lost populations, research efforts have been encouraged to develop sustainable and efficient restoration of macroalgal forests on a large scale. By promoting growth and fertility of collected thallus branches under controlled laboratory conditions, the availability of seedlings for restoration could be ensured without jeopardizing natural populations. Here we investigated the effect of a commercial algal biostimulant (AlgatronCifo (R)) on the photophysiology, growth and fertility of Gongolaria barbata (Stackhouse) Kuntze (Fucales, Phaeophyceae). In a factorial laboratory experiment, two different temperatures (10 oC and 14 degrees C) and two culture media [i.e. seawater (SW) and Algatron (AT)] were tested. The photosynthetic performance of G. barbata doubled after three weeks of culture with AT, while it decreased by 25% when cultivated in SW. The highest photosynthetic performance and growth were achieved at 14oC with AT, where fertile receptacles also developed, followed by seedling settlements. The thalli cultured in AT had similar or better photosynthetic performance than the initial control thalli. AT-cultured thalli had a greater ability to quench energy via photochemical pathways (q(P)) than those from the SW, which on the contrary, had higher levels of non-photochemical responses (q(N), NPQ(max)). This limited photosynthetic performance was probably linked to the higher P-limitation experienced under that treatment. The algal biostimulant enhanced the physiological performance and induced fertility of G. barbata, demonstrating its valorization potential and setting a new path for improved restoration applications
Multi-level Autonomic Business Process Management
The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-642-38484-4_14Nowadays, business processes are becoming increasingly complex
and heterogeneous. Autonomic Computing principles can reduce this complexity
by autonomously managing the software systems and the running processes,
their states and evolution. Business Processes that are able to be self-managed
are referred to as Autonomic Business Processes (ABP). However, a key challenge
is to keep the models of such ABP understandable and expressive in
increasingly complex scenarios. This paper discusses the design aspects of an
autonomic business process management system able to self-manage processes
based on operational adaptation. The goal is to minimize human intervention
during the process definition and execution phases. This novel approach, named
MABUP, provides four well-defined levels of abstraction to express business
and operational knowledge and to guide the management activity; namely, Organizational
Level, Technological Level, Operational Level and Service Level.
A real example is used to illustrate our proposal.Research supported by CAPES, CNPQ and Spanish Ministry of Science and Innovation.Oliveira, K.; Castro, J.; España Cubillo, S.; Pastor López, O. (2013). Multi-level Autonomic Business Process Management. En Enterprise, Business-Process and Information Systems Modeling. Springer. 184-198. doi:10.1007/978-3-642-38484-4_14S184198España, S., González, A., Pastor, Ó.: Communication Analysis: A Requirements Engineering Method for Information Systems. In: van Eck, P., Gordijn, J., Wieringa, R. (eds.) CAiSE 2009. LNCS, vol. 5565, pp. 530–545. Springer, Heidelberg (2009)Ganek, A.G., Corbi, T.A.: The dawning of the autonomic computing era. IBM Systems Journal 42(1), 5–18 (2003)Gonzalez, A., et al.: Unity criteria for Business Process Modelling. In: Third International Conference on Research Challenges in Information Science, RCIS 2009, pp. 155–164 (2009)Greenwood, D., Rimassa, G.: Autonomic Goal-Oriented Business Process Management. Management, 43 (2007)Haupt, T., et al.: Autonomic execution of computational workflows. In: 2011 Federated Conference on Computer Science and Information Systems, FedCSIS, pp. 965–972 (2011)Kephart, J.O., Chess, D.M.: The vision of autonomic computing. IEEE (2003)Lee, K., et al.: Workflow adaptation as an autonomic computing problem. In: Proceedings of the 2nd Workshop on Workflows in Support of Large-Scale Science, New York, NY, USA, pp. 29–34 (2007)Mosincat, A., Binder, W.: Transparent Runtime Adaptability for BPEL Processes. In: Bouguettaya, A., Krueger, I., Margaria, T. (eds.) ICSOC 2008. LNCS, vol. 5364, pp. 241–255. Springer, Heidelberg (2008)Oliveira, K., et al.: Towards Autonomic Business Process Models. In: International Conference on Software Engineering and Knowledge, SEKE 2012, San Francisco, California, USA (2012)Rahman, M., et al.: A taxonomy and survey on autonomic management of applications in grid computing environments. Concurr. Comput.: Pract. Exper. 23(16), 1990–2019 (2011)Reijers, H.A., Mendling, J.: Modularity in process models: Review and effects. In: Dumas, M., Reichert, M., Shan, M.-C. (eds.) BPM 2008. LNCS, vol. 5240, pp. 20–35. Springer, Heidelberg (2008)Rodrigues Nt., J.A., Monteiro Jr., P.C.L., de O. Sampaio, J., de Souza, J.M., Zimbrão, G.: Autonomic Business Processes Scalable Architecture. In: ter Hofstede, A.H.M., Benatallah, B., Paik, H.-Y. (eds.) BPM Workshops 2007. LNCS, vol. 4928, pp. 78–83. Springer, Heidelberg (2008)Strohmaier, M., Yu, E.: Towards autonomic workflow management systems. ACM Press (2006)Terres, L.D., et al.: Selection of Business Process for Autonomic Automation. In: 2010 14th IEEE International Enterprise Distributed Object Computing Conference, pp. 237–246 (October 2010)Tretola, G., Zimeo, E.: Autonomic internet-scale workflows. In: Proceedings of the 3rd International Workshop on Monitoring, Adaptation and Beyond, New York, NY, USA, pp. 48–56 (2010)Vedam, H., Venkatasubramanian, V.: A wavelet theory-based adaptive trend analysis system for process monitoring and diagnosis. In: Proceedings of the 1997 American Control Conference, vol. 1, pp. 309–313 (June 1997)Wang, Y., Mylopoulos, J.: Self-Repair through Reconfiguration: A Requirements Engineering Approach. In: 2009 IEEE/ACM International Conference on Automated Software Engineering, pp. 257–268 (November 2009)Yu, T., Lin, K.: Adaptive algorithms for finding replacement services in autonomic distributed business processes. In: Proceedings Autonomous Decentralized Systems, ISADS 2005, pp. 427–434 (2005
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Fabrication and characterisation of Si micropillar PV structures
Arrays of vertical silicon micropillar radial junction solar cells have been fabricated by diffusion of direct application spin on dopant and from the vapour phase through proximity rapid thermal diffusion. The micropillars were fabricated by optical lithography and deep reactive ion etching. The micropillar arrays show superior antireflective properties over the measured spectrum and good correlation to finite difference time domain modelling of identical geometry arrays. Junctions formed by a conventional spin on doping process of phosphorus containing dopant solution produced Suns-Voc values in the region of 0·3 V. This value is likely due to difficulties encountered in achieving an even distribution of dopant over the entire surface of the arrays. An alternative method utilising spin on dopant but employing an intermediate vapour phase diffusion step produced promising results with Suns-Voc values reaching 0·5 V following a post-diffusion drive-in ste
DÍAZ ARIÑO, B., Miliarios romanos de época republicana, Opuscula Epigraphica 16, Roma, 2015, 172 pp., ISBN: 978-88-7140-693-0. [RECENSIÓN]
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