Autor: Miranda, C. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Su alcuni teoremi di inclusione
Autorzy:: Miranda, C.
Powiązania:: https://bibliotekanauki.pl/articles/718633.pdf
Data publikacji:: 1965
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Źródło:: Annales Polonici Mathematici; 1964-1965, 16, 3; 305-315
0066-2216
Pojawia się w:: Annales Polonici Mathematici
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Impulsive Sound Detection Directly in Sigma-Delta Domain
Autorzy:: Miranda, I. D. dos S.
Lima, A. C. de C.
Powiązania:: https://bibliotekanauki.pl/articles/176966.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: impulsive signal detection
sigma-delta modulation
discrete cosine transform
Opis:: Recent implementations of Sigma-Delta (ΣΔ) converters have achieved low cost, low power consumption, and high integration while maintaining resolution as high as in Nyquist-rate converters. However, its usage implies demodulating the source signal delivered from ΣΔ modulation to Pulse-Code Modulation (PCM) on a pre-processing stage. This work proposes an algorithm based on Discrete Cosine Transform for impulsive signal detection to be applied directly on a modulated ΣΔ bitstream, targeting to reduce computational cost in acoustic event detection applications such as gunshot recognition systems. From pre-recorded impulsive sounds in ΣΔ format, it has been shown that the new method presents a similar error rate in comparison with traditional energy-based approaches in PCM, meanwhile, it reduces significantly the number of operations per unit time.
Źródło:: Archives of Acoustics; 2017, 42, 2; 255-261
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Definability in Infinitary Languages and Invariance by Automorphisms
Autorzy:: Rodrigues, Alexandre A.M.
Filho, Ricardo C. Miranda
de Souza, Edelcio G.
Powiązania:: https://bibliotekanauki.pl/articles/1368480.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Opis:: Given a $\mathcal L_{\alpha\beta} ^E$-structure $E$, where $\mathcal L_{\alpha\beta} ^E$ is an infinitary language, we show that $\alpha$ and $\beta$ can be chosen in such way that every orbit of the group $G$ of automorphisms of $E$ is $\mathcal L_{\alpha\beta} ^E$-definable. It follows that two sequences of elements of the domain $D$ of $E$ satisfy the same set of $\mathcal L_{\alpha\beta}$-formulas if and only if they are in the same orbit of $G$.
Źródło:: Reports on Mathematical Logic; 2010, 45; 119-133
0137-2904
2084-2589
Pojawia się w:: Reports on Mathematical Logic
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Occurrence of mycotoxins in talkan: a cereal-based food traditional for Turkic population
Autorzy:: Tattibayeva, D.
Nebot, C.
Miranda J.M.
Abuova, A.B.
Kizatova, M.Z.
Vazquez, B.
Powiązania:: https://bibliotekanauki.pl/articles/2087741.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: food-contamination
corn
fungi
HPLC-MS/MS
Kazakhstan
Źródło:: Polish Journal of Veterinary Sciences; 2018, 21, 2; 333-341
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Numerical and Physical Parametric Analysis of a SEN with Flow Conditioners in Slab Continuous Casting Mold
Autorzy:: Gonzalez-Trejo, J.
Real-Ramirez, C. A.
Miranda-Tello, R.
Rivera-Perez, F.
Cervantes-de-la-Torre, F.
Powiązania:: https://bibliotekanauki.pl/articles/351515.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: submerged entry nozzle
fluid-flow modifiers
continuous casting of steel
mold flow patterns
turbulence
Opis:: Some of the most recent technologies that improves the performance in continuous casting process has installed infrastructure outside the mold to modify the natural fluid flow pattern to obtain a quasi-steady condition and promote a uniform solidified shell of steel. The submerged entry nozzle distributes the liquid steel in the mold and can be used to obtain the flow symmetry condition with external geometry improvements. The fluid flow conditioners were located near the outlet ports of the nozzle. The aim of the modifiers is to impose a pseudo symmetric pattern in the upper zone of the mold by inhibiting the fluid exchange between the zones created by conditioners. This work evaluates the effect of the thickness and length of the fluid-flow modifiers on the overall performance of the submerged nozzle. These properties of the fluid-flow modifiers were normalized based on two of the geometric dimensions of the standard equipment. Numerical and physical simulations suggest that the flow modifier should be as thin as possible.
Źródło:: Archives of Metallurgy and Materials; 2017, 62, 2A; 927-946
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Satellite estimates of the long-term trend in phytoplankton size classes in the coastal waters of North-Western Bay of Bengal
Autorzy:: Miranda, J.
Lotliker, A.A.
Baliareingh, S.K.
Jena, A.K.
Samanta, A.
Sahu, K.C.
Kumar, T.S.
Powiązania:: https://bibliotekanauki.pl/articles/2079007.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: phytoplankton
size class
coastal water
long-term variability
satellite data
statistical analysis
Bengal Bay
Opis:: The study presents long-term variability in satellite retrieved phytoplankton size classes (PSC) at two coastal sites, off Gopalpur and Visakhapatnam, in the north-western Bay of Bengal. The abundance-based models by Brewin et al. (2010) (B10) and Sahay et al. (2017) (S17), for retrieval of PSC (micro, nano, and picophytoplankton), from satellite data, were validated. Both the models performed well in the retrieval of nano and microphytoplankton. However, B10 performed poorly in retrieving picophytoplankton. The statistical analysis indicated better performance of the S17 model and hence was applied to Moderate Resolution Imaging Spectroradiometer onboard Aqua satellite (MODISA) data to understand the temporal (at monthly climatology) and spatial variability (from nearshore to offshore). The spatial distribution indicated nearshore dominance of micro and offshore dominance of picophytoplankton. In nearshore waters off Gopalpur, microphytoplankton dominated throughout the year except for months of south-west monsoon (June and July) where the dominance of picophytoplankton was observed. All PSC exhibited similar distribution at an annual scale with a primary peak during pre-monsoon (March and April) and a secondary peak during post-monsoon (September— November). However, microphytoplankton concentration during post-monsoon was higher off Gopalpur in comparison to Visakhapatnam. The higher microphytoplankton concentration during pre-monsoon was attributed to recurrent phytoplankton blooms. Whereas, post-monsoon increment could be attributed to enhanced phytoplankton growth by availing nutrients sourced from monsoonal precipitation induced terrigenous influx. The outcome of the present study recommends the use of the S17 model for satellite retrieval of PSC from the north-western Bay of Bengal.
Źródło:: Oceanologia; 2021, 63, 1; 40-50
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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