Integrating cache-related pre-emption delays into analysis of fixed priority scheduling with pre-emption thresholds

Cache-related pre-emption delays (CRPD) have been integrated into the schedulability analysis of sporadic tasks with constrained deadlines for fixed-priority pre-emptive scheduling (FPPS). This paper generalizes that work by integrating CRPD into the schedulability analysis of tasks with arbitrary deadlines for fixed-priority pre-emption threshold scheduling (FPTS). The analysis is complemented by an optimal threshold assignment algorithm that minimizes CRPD. The paper includes a comparative evaluation of the schedulability ratios of FPPS and FPTS, for constrained-deadline tasks, taking CRPD into account

Fixed priority scheduling with pre-emption thresholds and cache-related pre-emption delays: integrated analysis and evaluation

Commercial off-the-shelf programmable platforms for real-time systems typically contain a cache to bridge the gap between the processor speed and main memory speed. Because cache-related pre-emption delays (CRPD) can have a significant influence on the computation times of tasks, CRPD have been integrated in the response time analysis for fixed-priority pre-emptive scheduling (FPPS). This paper presents CRPD aware response-time analysis of sporadic tasks with arbitrary deadlines for fixed-priority pre-emption threshold scheduling (FPTS), generalizing earlier work. The analysis is complemented by an optimal (pre-emption) threshold assignment algorithm, assuming the priorities of tasks are given. We further improve upon these results by presenting an algorithm that searches for a layout of tasks in memory that makes a task set schedulable. The paper includes an extensive comparative evaluation of the schedulability ratios of FPPS and FPTS, taking CRPD into account. The practical relevance of our work stems from FPTS support in AUTOSAR, a standardized development model for the automotive industry

Instalación de cubierta vegetal en taludes de obras en zonas áridas

This article describes the need of an especial treatment for clearance and terraced land attained in arid and semi-arid areas with a particular reference to South-East Spain. The extreme conditions of these areas because of the weather and substratum put obstacles in the way of tracing the human action. This paper underlines the main difficulties and suggests some solutions, treatments and a selection of easy propagation species and till that allow keeping harmony with landscape.El artículo expone la necesidad de un tratamiento especial de los desmontes y terraplenes realizados en zonas de clima árido y semiárido, con particular referencia al sureste peninsular. Las condiciones extremas de estas áreas, por clima y sustratos, dificultan el borrado de la huella de la actuación humana. En este trabajo se describen las principales dificultades y se subieren un conjunto de soluciones y tratamientos, así como una selección de especies de fácil propagación e implantación, que permitan una armonía con el paisaje

The Role of Endoscopic Ultrasound in the Diagnosis and Management of Primary Gastric Lymphoma

Endoscopic ultrasound (EUS) is considered a valuable diagnostic tool during the workup of malignant gastric lesions, including primary gastric lymphomas (PGL). Although endoscopy combined with multiple biopsies remains essential in the establishment of PGL diagnosis, EUS utilization in locoregional disease staging has been well documented in the literature. Data also support the possible role of EUS in prediction of response to first-line treatment, that is, Helicobacter pylori eradication. However, its application in the posttreatment setting remains problematic, since concordance rates between endosonography and histology findings during follow-up seem to vary substantially. The aim of the present review is to summarize all available data regarding the role of EUS in the management of PGL

Hacia una desarticulación del tópico de la 'virgen triste' en el Epistolario de Juana Borrero

Las instituciones asociadas al hecho literario han reservado a la escritora cubana Juana Borrero (1877-1896) la categoría de "mito". La presente lectura de su valioso Epistolario privilegia una mirada psicológica que desarticula los principales tópicos que han favorecido el mito. Con ese fin, se ha contextualizado a Borrero en la literatura hispanoamericana y cubana del XIX; se han reevaluado algunos tópicos biográficos y críticos; y se han delimitado los principales componentes de su discurso epistolar: las claves psicológicas de su subjetividad, las estrategias de seducción y autoafirmación, las cartas como collage de emociones, la retórica del discurso y del mito amoroso, y la retórica de la corporalidad. Finalmente, se proponen nuevas imágenes para la autora a partir del comparatismo con otras imágenes femeninas de fin de siglo europeo e hispanoamericano.Les institucions associades al fet literari han reservat a l'escriptora cubana Juana Borrero (1877-1896) el destí del "mite". La nostra lectura del seu valuós Epistolario privilegia una mirada psicològica que deconstrueix els principals tòpics que han fet possible el mite. Amb aquesta finalitat, s'ha contextualitzat a Borrero dins la literatura hispanoamericana i cubana del XIX; s'han revaluat alguns tòpics biogràfics i crítics; i s'han delimitat els principals components del seu discurs epistolar: claus psicològiques de la subjectivitat, estratègies de seducció i autoafirmació, les cartes com a collage d'emocions, la retòrica del discurs i del mite amorós, i la retòrica de la corporalitat. Finalment, es proposen un seguit de noves imatges de l'autora a partir del comparatisme amb d'altres imatges femenines de la fi de segla europea i hispanoamerican

The Comparison of Scraping, Trichogram, and Taping Techniques for Diagnosis of Demodicosis in Dog (PERBANDINGAN TEKNIK SCRAPING, TRICHOGRAM, DAN TAPING DALAM MENDIAGNOSIS DEMODEKSOSIS PADA ANJING).

Demodicosis is a parasitic disease which is predilected in skin. Demodicosis in dogs may present local or general clinical symptoms. The success of demodicosis treatment is highly dependent on dog immune conditions, nutritional status, disease status, and routine treatment. The success of the treatment is also affected by the accuracy in the diagnostic technique used. The purpose of this study was to compare the three diagnostic skin examination techniques namely scraping, trichogram, and taping to diagnose cases of demodicosis. A total of 20 dog samples was taken from dog patients that came to Bali Veterinary Clinic, at Prerenan, Badung, Bali, with symptoms of itching, hair loss, skin redness, scale, and hyperpigmentation. Sampling was done by technique of scraping, trichogram, and taping. Scraping technique was done by scraping the skin, trichogram technique was done by pulling hair, and taping technique was done by attaching the tape. The result of Demodex mite isolation from the three diagnostic techniques performed showed scraping technique 5.45 ± 1.05; trichogram technique 1.10 ± 0.91; and taping technique 3.50 ± 0.83 dogs. Its Concluded that scraping technique provides the best diagnostic value for the isolation of Demodex mites compared to the other two

Degradation of methylammonium lead iodide perovskite structures through light and electron beam driven ion migration

[Image: see text] Organometal halide perovskites show promising features for cost-effective application in photovoltaics. The material instability remains a major obstacle to broad application because of the poorly understood degradation pathways. Here, we apply simultaneous luminescence and electron microscopy on perovskites for the first time, allowing us to monitor in situ morphology evolution and optical properties upon perovskite degradation. Interestingly, morphology, photoluminescence (PL), and cathodoluminescence of perovskite samples evolve differently upon degradation driven by electron beam (e-beam) or by light. A transversal electric current generated by a scanning electron beam leads to dramatic changes in PL and tunes the energy band gaps continuously alongside film thinning. In contrast, light-induced degradation results in material decomposition to scattered particles and shows little PL spectral shifts. The differences in degradation can be ascribed to different electric currents that drive ion migration. Moreover, solution-processed perovskite cuboids show heterogeneity in stability which is likely related to crystallinity and morphology. Our results reveal the essential role of ion migration in perovskite degradation and provide potential avenues to rationally enhance the stability of perovskite materials by reducing ion migration while improving morphology and crystallinity. It is worth noting that even moderate e-beam currents (86 pA) and acceleration voltages (10 kV) readily induce significant perovskite degradation and alter their optical properties. Therefore, attention has to be paid while characterizing such materials using scanning electron microscopy or transmission electron microscopy techniques

Serum α-Fetoprotein Levels at Time of Recurrence Predict Post-Recurrence Outcomes Following Resection of Hepatocellular Carcinoma

Introduction: Although preoperative α-fetoprotein (AFP) has been recognized as an important tumor marker among patients with hepatocellular carcinoma (HCC), the predictive value of AFP levels at the time of recurrence (rAFP) on post-recurrence outcomes has not been well examined. Methods: Patients undergoing curative-intent resection of HCC between 2000 and 2017 were identified using a multi-institutional database. The impact of rAFP on post-recurrence survival, as well as the impact of rAFP relative to the timing and treatment of HCC recurrence were examined. Results: Among 852 patients who underwent resection of HCC, 307 (36.0%) individuals developed a recurrence. The median rAFP level was 8 ng/mL (interquartile range 3-100). Among the 307 patients who developed recurrence, 3-year post-recurrence survival was 48.5%. Patients with rAFP > 10 ng/mL had worse 3-year post-recurrence survival compared with individuals with rAFP 10 vs. 10 vs. 10 ng/mL had a twofold higher hazard of death in the post-recurrence setting (hazard ratio 1.96, 95% confidence interval 1.26-3.04). Conclusion: AFP levels at the time of recurrence following resection of HCC predicted post-recurrence survival independent of the secondary treatment modality used. Evaluating AFP levels at the time of recurrence can help inform post-recurrence risk stratification of patients with recurrent HCC.info:eu-repo/semantics/publishedVersio