44,564 research outputs found
Detection of microservices anti patterns using dynamic analysis runtime in Spinnaker
No full textThis attachment contains documents on strategies for detecting antipatterns using dynamic analysis, based on logs extracted from sidecars in a Kubernetes environment hosting the Spinnaker (https://spinnaker.io/) application.
These antipatterns were selected through a systematic literature review to identify the most critical antipatterns and evaluate their detection strategies. The emphasis was on antipatterns that either lacked effective detection by current methods or were not well addressed by static analysis techniques (e.g., source code, repositories, or process artifacts).
All processes related to the detection and triggering of Spinnaker tools, which aim to generate concise logs of Istio usage within a Kubernetes cluster, were included to facilitate understanding of the main idea behind the detections.
In addition, we have gathered information on how to execute, manage, and access the log data produced by Istio sidecars deployed with the Spinnaker application. This includes configuring the sidecars to properly capture logs, adjusting log levels, and ensuring that telemetry collection is working as intended.
More details are available in the text documents in the files.
The file "spinnaker-artifacts-20250524T182034Z-1-001.zip" contains information on detections, strategies, decisions, and results based on antipatterns, derived from Spinnaker logs.
On the other hand, the file "runtime-detection-notebook-artifacts-20250524T182033Z-1-001.zip" displays instructions for executing, collecting, and orchestrating Spinnaker, as well as for gathering and processing its logs. Additionally, there is a dataset of logs available for three types of executions:
- Initial (toy example),
- Intermediate (with a small "hello world" flow inside Spinnaker), and
- Complete (focused on achieving more functionalities).
References:
- [1] L. H. de Braz, B. B. N. de França, and B. B. P. Cafeo, “Dynamic Analysis for Detecting Microservices Antipatterns,” Anais do XIX Simpósio Brasileiro de Componentes, Arquiteturas e Reutilização de Software (SBCARS 2025). Sociedade Brasileira de Computação, pp. 67–78, Sep. 22, 2025. doi: 10.5753/sbcars.2025.14576.
- [2] L. H. de Braz, "Microservice Antipatterns: an approach for detection
using dynamic analysis", Computer Science Dissertation. Dec. 04, 2025
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Braz J Med Biol Res
No full textp. 439-443Bothrops erythromelas is responsible for many snake bites in northeastern Brazil. In the present study we determined the in vivo distribution of the venom following its subcutaneous injection into mice. B. erythromelas venom and albumin were labeled individually with 131I by the chloramine T method, and separated in a Sephacryl® S-200 column. The efficiency of labeling was 68%. Male Swiss mice (40-45 g), which had been provided with drinking water containing 0.05% KI over a period of 10 days prior to the experiment, were inoculated dorsally (sc) with 0.3 ml (2.35 x 105 cpm/mouse) of 131I-venom (N = 42), 131I-albumin or 131I (controls, N = 28 each). Thirty minutes and 1, 3, 6, 12, 18 and 24 h after inoculation, the animals were perfused with 0.85% NaCl and skin and various organs were collected in order to determine radioactivity content. There was a high rate of venom absorption in the skin (51%) within the first 30 min compared to albumin (20.1%) and free iodine (8.2%). Up to the third hour after injection there was a tendency for venom and albumin to concentrate in the stomach (3rd h), small intestine (3rd h) and large intestine (6th h). Both control groups had more radioactivity in the digestive tract, especially in the stomach, but these levels decreased essentially to baseline by 12-18 h postinjection. In the kidneys, the distribution profiles of venom, albumin and iodine were similar. Counts at 30 min postinjection were low in all three groups (1.37, 1.86 and 0.77, respectively), and diminished to essentially 0% by 12-18 h. Albumin tended to concentrate in muscle until the 3rd h postinjection (1.98%). There was a low binding of labeled venom in the liver (<0.54%), thyroid (<0.11%) and lungs (<0.08%), and no iodinated venom was detected in brain, heart, diaphragm, spleen or bladder. The low venom binding observed in most internal organs, comparable to that of albumin, suggests that B. erythromelas venom does not specifically target most internal organs. That is, the systemic effects of envenomation are mainly due to an indirect action.Ribeirão Pret
Efficient p-Multigrid Based Solvers for Isogeometric Analysis on Multipatch Geometries
No full textIsogeometric Analysis can be considered as the natural extension of the Finite Element Method (FEM) to higher-order spline based discretizations simplifying the treatment of complex geometries with curved boundaries. Finding a solution of the resulting linear systems of equations efficiently remains, however, a challenging task. Recently, p-multigrid methods have been considered [18], in which a multigrid hierarchy is constructed based on different approximation orders p instead of mesh widths h as it would be the case in classical h-multigrid schemes [8]. The use of an Incomplete LU-factorization as a smoother within the p-multigrid method has shown to lead to convergence rates independent of both h and p for single patch geometries [19]. In this paper, the focus lies on the application of the aforementioned p-multigrid method on multipatch geometries having a C0-continuous coupling between the patches. The use of ILUT as a smoother within p-multigrid methods leads to convergence rates that are essentially independent of h and p, but depend mildly on the number of patches.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Numerical Analysi
Acumulação de nutrientes no limbo foliar de guandu e estisolantes.
No full textGuandu (Cajanus cajan) e estilosantes (Stylosanthes guianensis var. vulgaris cv. Mineirão) são duas leguminosas cultivadas em solos dos cerrados da região Centro-Oeste, utilizadas para adubação verde, produção de sementes e pastoreio. O objetivo deste trabalho foi avaliar a acumulação dos nutrientes N, P, K, Ca, Mg, Zn, Cu, Mn e Fe no limbo foliar dessas leguminosas, em função dos dias após emergência (DAE) da planta. O experimento foi conduzido em Latossolo Vermelho distrófico, na Embrapa Arroz e Feijão, em Santo Antônio de Goiás, GO. Os tratamentos foram distribuídos em blocos ao acaso, com quatro repetições. As parcelas tiveram 6,0 m de largura e 20,0 m de comprimento. A adubação de plantio foi de 400 kg ha-1 da fórmula comercial 5-30-15. O plantio foi realizado em dezembro de 2001. Durante o ciclo das culturas, foram tomadas nove amostras aleatórias de limbos foliares para análise foliar. De posse da massa da matéria seca e da concentração dos nutrientes, calcularam-se as suas acumulações no limbo foliar das duas leguminosas. Fez-se o ajuste dos dados de acumulação do nutriente (Y) em função dos dias após a emergência (X) por um modelo exponencial quadrático Y = a exp(bx + cx2). O guandu produziu mais matéria seca e, de modo geral, teve maior acumulação de nutrientes que o estilosantes, até 98 dias de idade. Dentre os macronutrientes, as maiores acumulações foram de N e as menores de P. O micronutriente de maior acumulação no limbo foliar das duas leguminosas foi Fe, e o de menor acumulação, Cu
Acumulaçao de nutrientes em folhas de milheto e dos capins braquiária e mombaça.
No full textO milheto (Pennisetum glaucum) e os capins braquiária (Brachiaria brizantha cv. Marandu) e mombaça (Panicum maximum cv. Mombaça) são importantes gramíneas cultivadas nos solos sob cerrados, da região Centro-Oeste do Brasil, utilizadas principalmente para pastoreio. O objetivo deste trabalho foi avaliar a acumulação dos nutrientes N. P. K. Ca, Mg, Zn, Cu, Mn e Fe nas folhas dessas gramíneas, em função dos dias após a emergência da planta. O experimento foi conduzido em Latossolo Vermelho distrófico, na Embrapa Arroz e Feijão, em Santo Antônio de Goiás, GO. Os tratamentos foram testados em blocos ao acaso, com quatro repetições, em parcelas de 6,0 m de largura e 20 m de comprimento. No plantio foram usados 400 kg/ha de adubo da fórmula comercial 5-30-15. O plantio foi feito em dezembro de 2001 e, durante o ciclo de culturas, foram feitas nove amostragens de folhas para análise química, em diferentes períodos tomados em dias após emergência. De posse da massa seca e da concentração dos nutrientes calcularam-se as respectivas acumulações no lombo foliar das três gramíneas. Fez-se o ajuste dos dados de acumulação do nutreinte (Y), em função de dias após a emergência, por um modelo experimental quadrático Y= a exp(bx + cx 2). O milheto foi a gramínea que mais acumulou nutrientes no limbo foliar e em menor tempo, seguido pelos capins mombaça e braquiária. Entre os macronutrientes, as maiores acumulações foram as de N e as de K, e as menores, as de P. Entre os micronutrientes, o ferro foi o elemento que apresentou maior acúmulo no limbo foliar das três gramíneas
Indicadores de contato entre populações de suínos domésticos e suídeos asselvajados na Região Sul de Mato Grosso do Sul.
No full textO objetivo deste estudo foi investigar a existência de contato entre as populações de suínos domésticos e suídeos asselvajados na região de concentração de suinocultura do sul do estado de Mato Grosso do Sul por meio da utilização de indicadores de contato entre essas populações e construir um modelo de adequabilidade ambiental para o javali nas áreas de suinocultura do sul do estado de Mato Grosso do Sul. Was objectived to investigate the existence of contact between populations of domestic swine and wild swabs in the swine concentration region of southern Mato Grosso do Sul state through the use of contact indicators between these populations and build a model of environmental suitability for the wild boar in the areas of swine breeding in southern Mato Grosso do Sul.Orientadora: Prof.ª Dr.ª Aiesca de Oliveira Pellegrin
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Novel high performance poly(p-phenylene benzobisimidazole) (PBDI) membranes fabricated by interfacial polymerization for H 2 separation
No full text Membranes with high selectivity and permeance are needed to reduce energy consumption in hydrogen purification and pre-combustion CO 2 capture. Polybenzimidazole (PBI) is one of the leading membrane materials for this separation. In this study, we present superior novel supported PBI (poly(p-phenylene benzobisimidazole), PBDI) membranes prepared by a facile interfacial polymerization (IP) method. The effect of IP reaction duration, operating temperature and pressure on membrane separation performance was systematically investigated. The best performance was achieved for membranes prepared in a 2 h reaction time. The resulting membranes display an ultrahigh mixed-gas H 2 /CO 2 selectivity of 23 at 423 K together with an excellent H 2 permeance of 241 GPU, surpassing the membrane performance of conventional polymers (the 2008 Robeson upper bound). These separation results, together with the facile manufacture, pressure resistance, long-term thermostability (>200 h) and economic analysis, recommend the PBDI membranes for industrial use in H 2 purification and pre-combustion CO 2 capture. Besides, PBDI membranes possess high selectivities towards H 2 /N 2 (up to 60) and H 2 /CH 4 (up to 48) mixtures, indicating their potential applications in ammonia synthesis and syngas production. Accepted Author ManuscriptChemE/Catalysis EngineeringOLD ChemE/Organic Materials and InterfacesRST/Storage of Electrochemical Energ
Citations of the author H C Rajpoot
No full textThe list of the articles, research papers, theses, and book chapters globally citing the author H. C. Rajpoot</p
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