Skocz do pozycji: 1.

Tytuł:

Using symbolic computation in the characterization of frictional instabilities involving orthotropic materials

Autorzy:

Agwa, M. A.
Pinto da Costa, A.

Powiązania:

https://bibliotekanauki.pl/articles/330798.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

Coulomb friction
dynamic instabilities
surface solutions
orthotropic material
tarcie Coulomba
niestabilność dynamiczna
roztwór powierzchniowy
materiał ortotropowy

Opis:

The present work addresses the problem of determining under what conditions the impending slip state or the steady sliding of a linear elastic orthotropic layer or half space with respect to a rigid flat obstacle is dynamically unstable. In other words, we search the conditions for the occurrence of smooth exponentially growing dynamic solutions with perturbed initial conditions arbitrarily close to the steady sliding state, taking the system away from the equilibrium state or the steady sliding state. Previously authors have shown that a linear elastic isotropic half space compressed against and sliding with respect to a rigid flat surface may get unstable by flutter when the coefficient of friction μ and Poisson's ratio ν are sufficiently large. In the isotropic case they have been able to derive closed form analytic expressions for the exponentially growing unstable solutions as well as for the borders of the stability regions in the space of parameters, because in the isotropic case there are only two dimensionless parameters (μ and ν). Already for the simplest version of orthotropy (an orthotropic transversally isotropic material) there are seven governing parameters (μ, five independent material constants and the orientation of the principal directions of orthotropy) and the expressions become very lengthy and literally impossible to manipulate manually. The orthotropic case addressed here is impossible to solve with simple closed form expressions, and therefore the use of computer algebra software is required, the main commands being indicated in the text.

Źródło:

International Journal of Applied Mathematics and Computer Science; 2015, 25, 2; 259-267
1641-876X
2083-8492

Pojawia się w:

International Journal of Applied Mathematics and Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Effects of disinfectant fogging procedure on dust, ammonia concentration, aerobic bacteria and fungal spores in a farrowing-weaning room

Autorzy:

Costa, A.
Colosio, C.
Gusmara, C.
Sala, V.
Guarino, M.

Powiązania:

https://bibliotekanauki.pl/articles/50123.pdf

Data publikacji:

2014

Wydawca:

Instytut Medycyny Wsi

Opis:

Introduction and Objective. In the last decades, large-scale swine production has led to intensive rearing systems in which air quality can be easily degraded by aerial contaminants that can pose a health risk to the pigs and farm workers. This study evaluated the effects of fogging disinfectant procedure on productive performance, ammonia and dust concentration, aerobic bacteria and fungal spores spreading in the farrowing–weaning room. Materials and Method. This trial was conducted in 2 identical farrowing-weaning rooms of a piggery. In both rooms, 30 pregnant sows were lodged in individual cages. At 75 days of age, the piglets were moved to the fattening room. In the treated room, with the birth of the first suckling-pig, the fogging disinfection with diluted Virkon S was applied once a day in the experimental room per 15 minutes at 11:00. The fogging disinfectant treatment was switched between rooms at the end of the first trial period. Temperature, relative humidity, dust (TSP-RF fractions and number of particles), ammonia concentration and aerial contaminants (enterococci, Micrococcaeae and fungal spores) were monitored in both rooms. Results. Ammonia concentration reduction induced by fogging disinfection was estimated 18%, total suspended particles and the respirable fraction were significantly lower in the experimental room. Fungal spores resulted in a significant reduction by the fogging procedure, together with dust respirable fraction and fine particulate matter abatement. Conclusions. The fogging disinfection procedure improved air quality in the piggery, thereby enhancing workers and animals health.

Źródło:

Annals of Agricultural and Environmental Medicine; 2014, 21, 3
1232-1966

Pojawia się w:

Annals of Agricultural and Environmental Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Shape memory process in resorbable polymers: effect on surface properties and cell adhesion

Autorzy:

Costa, A. M.
Ferreira, A. S.
Posadowska, U.
Krok, M.
Smola, A.
Dobrzyński, P.
Pamuła, E.

Powiązania:

https://bibliotekanauki.pl/articles/286068.pdf

Data publikacji:

2012

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

shape memory
PLGA
tissue regeneration
foil

Opis:

The objectives of this study were to confirm the shape memory behavior of two new bioresorbable terpolymers (L-lactide, glycolide, and trimethylene carbonate: L-PLGTMC and B-PLGTMC), to follow the influence of the shape memory process on their surface properties and to test their cytocompatibility using osteoblast-like cells. For this purpose, foils of both terpolymers were prepared. The terpolymers' ability to recover up to 92-93% of the memorized shape within 10 seconds was obtained. The influence of shape memory process on the surface properties was assessed by water contact angle (WCA) measurement and atomic force microscopy (AFM) and the results suggested that both terpolymers preserved the hydrophilicity after recovery and also that B-PLGTMC polymer was rougher than L-PLGTMC (about 9 folds more). The AFM pictures showed the presence of spherical shape hills on the B-PLGTMC foil surface which after the stretching procedure became oriented toward the direction of the applied load. The terpolymers were seeded on both sides (Top and Bottom faces) with human MG63 osteoblast-like cells. Cell viability was assessed after 1, 3 and 7 days, using MTT assay. Results revealed an increasing number of metabolically active cells with the incubation time, suggesting, together with nitric oxide (NO) level determination, the cytocompatibility of both terpolymers. Cell spreading and morphology were investigated by H&E staining and obtained results corresponded well with ones of MTT and NO.

Źródło:

Engineering of Biomaterials; 2012, 15, 114; 8-11
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Involvement of carbohydrates and antioxidant enzymes in the oxidative balance during drought and recovery: the eucalyptus case

Autorzy:

Correia, B.
Silva, S.
Jesus, C.
Valledor, L.
Dias, M.
Costa, A.
Santos, C.
Pinto, G.

Powiązania:

https://bibliotekanauki.pl/articles/79853.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
carbohydrate
antioxidative enzyme
oxidative balance
drought
recovery
cellular function
abiotic stress
reactive oxygen species
eucalyptus
Eucalyptus globulus

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Limits in the use of cPTIO as nitric oxide scavenger and EPR probe in plant cells and seedlings

Autorzy:

D'Alessandro, S.
Posocco, B.
Costa, A.
Zahariou, G.
Lo Schiavo, F.
Carbonera, D.
Zottini, M.

Powiązania:

https://bibliotekanauki.pl/articles/80661.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
nitric oxide
scavenger
plant cell
seedling
2-4-carboxyphenyl-4,4,5,5-tetramethyl imidazoline-1-oxyl-3-oxide
fluorescent dye
EPR probe

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Relationship between performance, dry-land power and kinematics in master swimmers

Autorzy:

Espada, M. C.
Costa, M. J.
Costa, A. M.
Silva, A. J.
Barbosa, T. M.
Pereira, A. F.

Powiązania:

https://bibliotekanauki.pl/articles/307228.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

pływanie
kinematyka
energia
master swimmers
kinematic
dry-land power
performance

Opis:

The purpose of the study was to analyze the relationships between sprint swimming performance, dry-land power, and kinematics in master swimmers. Twenty-two male master swimmers were separated in two groups based on their chronological age: (i) 30–39 years and; (ii) 40–49 years. Maximum dry-land power was determined through counter movement jump and 3 kg medicine ball throwing (H_max and T_max, respectively). Kinematic determinants of performance were measured during a maximal bout of 15, 25 and 50 m front crawl (T15, T25, T50). Stroke frequency (SF), stroke length (SL) and stroke index (SI) were calculated as kinematical aspects of the stroke. In the 30-39 group, SI25 was correlated to T25 (r = –0.76, p < 0.01, η² = 0.96), the same was observed between SI50 and T50 (r = –0.83, p < 0.01, η2 = 0.96). Only SI50 was significantly correlated to T50 (r = –0.86, p < 0.01, η² = 0.97) in the 40–49 years age cohort. In dryland power variables, Hmax and Tmax were only correlated in the younger master swimmers group (r = –0.87, p < 0.01, η2 = 0.97). There were no significant differences (p < 0.05) between younger (30–39 years) and older (40–49 years) swimmers groups in dry-land tests (H_max 28.5 ± 5.9 vs. 26.5 ± 3.9 cm and T_max 4.2 ± 1.0 vs. 4.2 ± 1.1 m). Our results suggest that swimming performance in younger master swimmers (30–39 years) seem more dependent on kinematic swimming variables than on strength parameters, which were most related to swimming performance in the older master swimmers (40–49 years).

Źródło:

Acta of Bioengineering and Biomechanics; 2016, 18, 2; 145-151
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Robust control of depth of anesthesia based on H∞ design

Autorzy:

Caiado, D. V.
Lemos, J. M.
Costa, B. A.

Powiązania:

https://bibliotekanauki.pl/articles/229439.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

depth of anesthesia
model uncertainty
robust control feedback
H∞ design
μ-synthesis

Opis:

This paper presents a case study on the design of a robust controller for the depth of anesthesia (DoA) induced by the drug propofol. This process is represented by a linear model together with a non-parametric uncertainty description that is evaluated using a patient model bank with 20 patients undergoing sedation. By using H∞ methods, the controller is aimed to comply with robust stability and performance specifications for the class of patient models considered. A minimization problem of sensitivity and complementary sensitivity is made to design the controller. The controller that results from this procedure is approximated by a controller with a lower order, that in turn is redesigned in discrete time for computer control application. The resulting controller is evaluated in simulations using a realistic nonlinear model of DoA.

Źródło:

Archives of Control Sciences; 2013, 23, 1; 41-59
1230-2384

Pojawia się w:

Archives of Control Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Correlation between clinical efficacy on pruritus and serum interleukin-31 levels in dogs with atopic dermatitis treated with lokivetmab

Autorzy:

Calesso, J.R.
Marques, V.S.
de Carvalho, O.V.
Costa-Val, A.P.

Powiązania:

https://bibliotekanauki.pl/articles/16647579.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

atopic dermatitis
interleukin-31
lokivetmab
monoclonal antibody
pruritus

Opis:

Studies on serum interleukin (IL)-31 levels in dogs with atopic dermatitis (AD) and their correlation with disease severity are limited. To the author’s knowledge, there are no studies that measured serum IL-31 in dogs treated with lokivetmab injections, a selective inhibitor of this key cytokine in pruritus. The aim of the study was to evaluate serum IL-31 levels in dogs treated with lokivetmab and correlate it with the severity of canine atopic dermatitis using the pruritus visual analog scale (pVAS) and canine atopic dermatitis extent and severity index (CADESI-04). Ten client-owned dogs diagnosed with AD received two injections of lokivetmab four weeks apart. Disease severity was assessed using the pVAS and CADESI-04 scores before and after both injections. In addition, canine serum IL-31 levels were measured at the same moments. Serum IL-31 was detected in all dogs in the study. There was a significant reduction in pVAS scores and serum IL-31 after administrations. However, there was no difference in CADESI-04 scores, and there was no significant correlation between CADESI-04 scores and serum IL-31 in dogs diagnosed with AD. Nonetheless, a significant positive correlation was observed between the pVAS scores and serum IL-31 levels with lokivetmab therapy, which reinforces the role of IL-31 in the pathogenesis of pruritus in dogs with AD. The data presented here provide further evidence that IL-31 is directly involved in pruritus pathogenesis in dogs with AD. In addition, blocking IL-31 has a significant antipruritic effect, but has no influence on skin lesion severity and extension.

Źródło:

Polish Journal of Veterinary Sciences; 2023, 26, 2; 231-238
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Reversible electron charge transfer in single-wall carbon nanotubes

Autorzy:

Costa, S.
Bachmatiuk, A.
Borowiak-Palen, E.

Powiązania:

https://bibliotekanauki.pl/articles/779706.pdf

Data publikacji:

2008

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

nanorurki węglowe jednościenne
domieszkowanie
Raman
SWCNT
doping

Opis:

Single-wall carbon nanotubes (SWCNT) have proved to be very special materials due to their unique electronic properties. Over the last years many scientists have dedicated their research to the study of the these materials as an electronic system. Amphoteric doping effects (n-type and p-type), which can be reversed, became a very popular way of manipulating the optic and electronic properties of carbon nanotubes. In the particular case of SWCNT, the most common and widely used procedure, which changes their properties, is acid treatment applied as a purification procedure. The effect of the addition of this kind of the dopant has been widely studied but not fully understood so far. Here, we present a study, of two kinds of SWCNT, produced within different techniques: (i) chemical vapors deposition and (ii) laser ablation. The main difference between the two types is the diameter distribution of the obtained materials, which is broad in the first technique and narrow in the second. After the acid treatment it is possible to observe a diameter sensitive doping effect on both samples. Resonance Raman spectroscopy, optical absorption spectroscopy (OAS) in UV/Vis/NIR and the Fourier transform middle-infrared (FTIR) spectroscopy have been applied for the characterization of the samples.

Źródło:

Polish Journal of Chemical Technology; 2008, 10, 2; 1-4
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

On ideals of a skew lattice

Autorzy:

Costa, João Pita

Powiązania:

https://bibliotekanauki.pl/articles/728981.pdf

Data publikacji:

2012

Wydawca:

Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii

Tematy:

noncommutative lattice
skew lattice
band of semigroups
ideals
coset structure
Green's relations
skew Boolean algebras

Opis:

Ideals are one of the main topics of interest when it comes to the study of the order structure of an algebra. Due to their nice properties, ideals have an important role both in lattice theory and semigroup theory. Two natural concepts of ideal can be derived, respectively, from the two concepts of order that arise in the context of skew lattices. The correspondence between the ideals of a skew lattice, derived from the preorder, and the ideals of its respective lattice image is clear. Though, skew ideals, derived from the partial order, seem to be closer to the specific nature of skew lattices. In this paper we review ideals in skew lattices and discuss the intersection of this with the study of the coset structure of a skew lattice.

Źródło:

Discussiones Mathematicae - General Algebra and Applications; 2012, 32, 1; 5-21
1509-9415

Pojawia się w:

Discussiones Mathematicae - General Algebra and Applications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Testing a Deaf Mute Examinee in Costa Rica

Autorzy:

Shurany, Tuvia
Chaves, Fabiola

Powiązania:

https://bibliotekanauki.pl/articles/523257.pdf

Data publikacji:

2013

Wydawca:

Krakowska Akademia im. Andrzeja Frycza Modrzewskiego

Tematy:

Silent Answer Test
examination of deaf-and-dumb subject
deaf-mute examinee

Źródło:

European Polygraph; 2013, 7, 2(24); 69-76
1898-5238
2380-0550

Pojawia się w:

European Polygraph

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

The Autobiography of Benvenuto Cellini. A Model of Resilient Vocation

Autorzy:

Forment Costa, José María

Powiązania:

https://bibliotekanauki.pl/articles/2120308.pdf

Data publikacji:

2022-06-29

Wydawca:

Akademia Ignatianum w Krakowie

Tematy:

Benvenuto Cellini
Renaissance
Autobiography
Resilience
Benvenuto Cellini
Renacimiento
Autobiografía
Resiliencia

Opis:

Benvenuto Cellini is one of the great sculptors of the 16th century. Already in his time, his works were admired in Rome, Paris and his native Florence. Beyond his works, his popularity has remained unchanged over the last four centuries thanks to his autobiography. This autobiography is an essential work for gaining first-hand knowledge of the sculptor's work, but also, and especially, of the anthropological vision of culture at the time. This article attempts to show this vision and at the same time to highlight how the reading of this autobiography is an example of how following one's vocation is a fundamental help in overcoming difficulties. 

Źródło:

Multidisciplinary Journal of School Education; 2022, 11, 1 (21); 115-127
2543-7585

Pojawia się w:

Multidisciplinary Journal of School Education

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Sea cruises as a new branch of the tourism industry

Autorzy:

Ptaszycka-Jackowska, Danuta
Mossakowska, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/627889.pdf

Data publikacji:

2012

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

tourism geography
sea tourism
sea cruises
tourism fleet
Costa Crociere

Opis:

The article presents sea cruises - a form of tourism which is not very common in Poland but flourishes in other parts of the world. The author describes world and European fleets, cruise routes, ports visited and elements of cruise organization. She presents a detailed illustration of the most powerful European company - the Italian Costa Crociere (Costa Cruises) - which organizes cruises in Europe and all over the world.

Źródło:

Turyzm; 2012, 22, 1; 29-39
0867-5856
2080-6922

Pojawia się w:

Turyzm

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Arcangeliella scissilis, a rare American semihypogeous fungus

Autorzy:

Calonge, F.D.
Mata, M.

Powiązania:

https://bibliotekanauki.pl/articles/67243.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

Arcangeliella scissilis
American fungi
semi hypogeous fungi
fungi
Russulales
astrogastraceous fungi
Costa Rica
taxonomy
distribution

Opis:

As a consequence of the finding of Arcangeliella scissilis in Costa Rica, we thought to carry out a full description of this material, giving some aspects on its taxonomy, ecology and distribution.

Źródło:

Acta Mycologica; 2013, 48, 1
0001-625X
2353-074X

Pojawia się w:

Acta Mycologica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Nonlinear elastic brittle damage: numerical solution by means of operator split methods

Autorzy:

Pires-Domingues, S.M.
Costa-Mattos, H.
Rochinha, F.A.

Powiązania:

https://bibliotekanauki.pl/articles/279553.pdf

Data publikacji:

1999

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

damage mechanics
finite elements
splitting technique

Opis:

The avoid the loss of well-posedness in the post localization range, some continuum damage theories for elastic materials introduce higher order gradients of the damage variable into constitutive model. Although such theories allow for mathematically correct modelling of the strain localization phenomena, they are usually considered to be very complex to handle from the numerical point of view. The present work deals with the numerical implementation of a gradient-enhanced damage theory for elastic materials. A simple numerical technique, based on the finite element method, is proposed to approximate the solution to the resulting nonlinear mathematical problems. The coupling between damage and strain variables is circumvented by means of a splitting technique.
Celem poprawności sformułowania problemu w pewnych teoriach zniszczenia do modelu konstytutywnego materiałów sprężystych wprowadza się wyższe gradienty zmiennych opisujących zniszczenie. Chociaż teorie takie umożliwiają matematycznie poprawne modelowanie zjawisk lokalizacji odkształceń, to z punktu widzenia numeryki stosowanie ich uważa się zwykle za bardzo skomplikowane. W niniejszej wersji przedstawiono zastosowanie numeryczne teorii zniszczenia z wyższymi gradientami do materiałów sprężystych. Do przybliżonego rozwiązania otrzymanych nieliniowych zadań matematycznych zaproponowano prostą metodę numeryczną opartą na metodzie elementów skończonych. Użycie metody operatorowej pozwoliło uniknąć sprężenia między zmiennymi opisującymi zniszczenie i odkształcenie.

Źródło:

Journal of Theoretical and Applied Mechanics; 1999, 4; 847-861
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

A Level-Based Approach to Prioritize Telecommunications R&D

Autorzy:

Fialho, J.
Godinho, P.
Costa, J. P.
Afonso, R.
Regalado, J. G.

Powiązania:

https://bibliotekanauki.pl/articles/307952.pdf

Data publikacji:

2008

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

multicriteria decision support
R&D project evaluation

Opis:

In this paper, an approach to evaluate R&D projects in telecommunications is presented. These Project have particular features that cannot be properly incorporated by classical evaluation methods. This approach incorporates different criteria, both quantitative and qualitative, and also management flexibility and uncertainty. Thus, it is an approach that can be applied to real data of R&D projects in a telecommunications company.

Źródło:

Journal of Telecommunications and Information Technology; 2008, 4; 40-43
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Feeding habits and habitat of herbivorous mammals from the Early–Late Hemphillian (Miocene) of Costa Rica

Autorzy:

Perez-Crespo, V.A.
Laurito, C.A.
Arroyo-Cabrales, J.
Valerio, A.L.
Morales-Puente, P.
Cienfuegos-Alvarado, E.
Otero, F.J.

Powiązania:

https://bibliotekanauki.pl/articles/21193.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

Carbon and oxygen stable isotope values in the dental enamel of fossils were used to infer the diet and habitat of the extinct equids Calippus hondurensis, Dinohippus mexicanus, and Protohippus gidleyi, the gomphothere Gomphotherium hondurensis, and the llama Hemiauchenia vera of the Early–Late Hemphillian (Hh2) from San Gerardo de Limoncito, Puntarenas province, Costa Rica. The results suggest that these mammals fed mainly on C₃ plants and lived in clearings of rainforests. This contrasts with previous studies from North America that indicated that the same species lived in forest savannas and fed mainly on C₄ plants, but it is similar to the results obtained from the palynological record of the area, as well as with several vegetation models suggesting the presence of humid tropical forest during the Miocene in Central America.

Źródło:

Acta Palaeontologica Polonica; 2018, 63, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Effect of Winter Cover Crop Biomass on Summer Weed Emergence and Biomass Production

Autorzy:

Bittencourt, H.H.
Lovato, P.E.
Comin, J.J.
Lana, M.A.
Altieri, M.A.
Costa, M.D.
Gomes, J.C.

Powiązania:

https://bibliotekanauki.pl/articles/65024.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Opis:

A greenhouse assay was carried out to evaluate the effect of winter cover crop residues on spontaneous plants that commonly occur on summer annual fields in Southern Brazil. Dry shoot residues of rye (Secale cereale), vetch (Vicia villosa), fodder radish (Raphanus sativus), and a mix of the three species, were applied over pots that had been seeded with alexandergrass (Brachiaria plantaginea), hairy beggarticks (Bidens pilosa), wild poinsettia (Euphorbia heterophylla), and morning glory (Ipomoea grandifolia) at four different depths (0, 1, 2, or 4 cm). Plant emergence and biomass production were measured. Residues of rye reduced the emergence of B. plantaginea, while vetch diminished I. grandifolia and B. plantaginea emergence. Fodder radish reduced emergence of I. grandifolia. The mix of cover crops reduced emergence of I. grandifolia, B. plantaginea, and B. pilosa. None of the cover crops differed from the control on E. heterophylla emergence. The lowest yields in spontaneous plant shoot biomass were obtained from the cover with rye + vetch + fodder radish. The lowest values of root biomass occurred under cover with rye, fodder radish or the mix. Use of vetch residues decreased emergence of B. plantaginea and I. grandifolia, but enhanced biomass accumulation by the latter.

Źródło:

Journal of Plant Protection Research; 2013, 53, 3
1427-4345

Pojawia się w:

Journal of Plant Protection Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Detecting driver’s fatigue, distraction and activity using a non-intrusive ai-based monitoring system

Autorzy:

Costa, M.

Powiązania:

https://bibliotekanauki.pl/articles/91561.pdf

Data publikacji:

2019

Wydawca:

Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych

Tematy:

driver monitoring system
intelligent transportation systems
driver distraction monitoring
driver fatigue monitoring

Opis:

The lack of attention during the driving task is considered as a major risk factor for fatal road accidents around the world. Despite the ever-growing trend for autonomous driving which promises to bring greater road-safety benefits, the fact is today’s vehicles still only feature partial and conditional automation, demanding frequent driver action. Moreover, the monotony of such a scenario may induce fatigue or distraction, reducing driver awareness and impairing the regain of the vehicle’s control. To address this challenge, we introduce a non-intrusive system to monitor the driver in terms of fatigue, distraction, and activity. The proposed system explores state-of-the-art sensors, as well as machine learning algorithms for data extraction and modeling. In the domain of fatigue supervision, we propose a feature set that considers the vehicle’s automation level. In terms of distraction assessment, the contributions concern (i) a holistic system that covers the full range of driver distraction types and (ii) a monitoring unit that predicts the driver activity causing the faulty behavior. By comparing the performance of Support Vector Machines against Decision Trees, conducted experiments indicated that our system can predict the driver’s state with an accuracy ranging from 89% to 93%.

Źródło:

Journal of Artificial Intelligence and Soft Computing Research; 2019, 9, 4; 247-266
2083-2567
2449-6499

Pojawia się w:

Journal of Artificial Intelligence and Soft Computing Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

A 3D trabecular bone homogenization technique

Autorzy:

Marques, Marco Costa
Belinha, J.
Oliveira, A. F.
Manzanares Cespedes, M.C.
Natal Jorge, R.M.

Powiązania:

https://bibliotekanauki.pl/articles/27324130.pdf

Data publikacji:

2020

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

fabric tensor
homogenization technique
multiscale
bone
tensor tkaniny
technika homogenizacji
wieloskalowe
kość

Opis:

Purpose: Bone is a hierarchical material that can be characterized from the microscale to macroscale. Multiscale models make it possible to study bone remodeling, inducing bone adaptation by using information of bone multiple scales. This work proposes a computationally efficient homogenization methodology useful for multiscale analysis. This technique is capable to define the homogenized microscale mechanical properties of the trabecular bone highly heterogeneous medium. Methods: In this work, a morphology-based fabric tensor and a set of anisotropic phenomenological laws for bone tissue was used, in order to define the bone micro-scale mechanical properties. To validate the developed methodology, several examples were performed in order to analyze its numerical behavior. Thus, trabecular bone and fabricated benchmarks patches (representing special cases of trabecular bone morphologies) were analyzed under compression. Results: The results show that the developed technique is robust and capable to provide a consistent material homogenization, indicating that the homogeneous models were capable to accurately reproduce the micro-scale patch mechanical behavior. Conclusions: The developed method has shown to be robust, computationally less demanding and enabling the authors to obtain close results when comparing the heterogeneous models with equivalent homogenized models. Therefore, it is capable to accurately predict the micro-scale patch mechanical behavior in a fraction of the time required by classic homogenization techniques.

Źródło:

Acta of Bioengineering and Biomechanics; 2020, 22, 3; 139--152
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Assessment of isometric strength of the shoulder rotators in swimmers using a handheld dynamometer : a reliability study

Autorzy:

Coinceicao, A.
Parraca, J.
Marinho, D.
Costa, M.
Louro, H.
Silva, A.
Batalha, N.

Powiązania:

https://bibliotekanauki.pl/articles/306193.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

siłomierz
pływanie
młodzi pływacy
handheld dynamometer
prone position
young swimmers
swimming

Opis:

The purpose of this study was to determine the reliability of shoulder isometric strength assessment using the microfet 2™ dynamometer in adolescent swimmers. Methods: Twenty-nine participants (16.2 ± 1.2 years old; 59.05 ± 6.98 kg of body mass) were tested using the microfet 2™ dynamometer. Swimmers performed an isometric strength test (IST) in two distinct occasions with 7 days apart in order to calculate the reliability. All participants were asked to perform a maximal isometric contraction from the external and internal shoulder rotators in a prone body position. Results: The external and internal shoulder rotators showed an excellent intraclass correlation coefficients for both shoulders, with more than 0.90 and a low percentage of method error variation. The external/internal ratios reliability was good in dominant (ICC 0.80) and non-dominant (ICC 0.81) shoulders. The reliability using Bland–Altman method showed that systematic errors (mean difference between test-retest) were nearly zero and the 95% limits of agreement narrow, indicating a good reliability. Conclusions: It can be concluded that microfet 2™ is a reliable apparatus for measuring the strength of the external and internal rotation of the shoulder in swimmers. Its light weight and easy portable characteristics can help swimming coaches monitoring specific dry-land strength training programs for their swimmers.

Źródło:

Acta of Bioengineering and Biomechanics; 2018, 20, 4; 113-119
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Measurement Precision Under Repeatability Conditions of a Batch of Sound Power Assessment for Blenders in Reverberation Room

Autorzy:

Costa-Felix, R. P. B.

Powiązania:

https://bibliotekanauki.pl/articles/177133.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

metrology
measurement precision
sound power assessment
reverberation room

Opis:

A set of sound power assessments was performed to determine measurement precision in specified conditions by the comparison method in a reverberation room with a fixed position array of six microphones. Six blenders (or mixers) and, complementary, a reference sound source were the noise sources. Five or six sound power calculations were undertaken on each noise source, and the standard deviation (s_r) was computed as “measurement precision under repeatability conditions” for each octave band from 125 Hz to 8 kHz, and in dB(A). With the results obtained, values of s_r equal 1.0 dB for 125 Hz and 250 Hz, 0.8 dB for 500 Hz to 2 kHz, and 0.5 dB for 4 kHz and 8 kHz. Those can be considered representative as sound power precision for blenders according to the measurement method used. The standard deviation of repeatability for the A-weighted sound power level equals 0.6 dB. This paper could be used for house or laboratory tests to check where their uncertainty assessment for sound power determination is similar or not to those generated at the National Metrology Institute.

Źródło:

Archives of Acoustics; 2016, 41, 3; 591-597
0137-5075

Pojawia się w:

Archives of Acoustics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Pulmonary hypertension secondary to veno-occlusive disease in a 15-years old boy: a case report.

Autorzy:

Barros, Pedro Pinheiro
Fortes, Henry Martins Soares
e Silva Rocha, Marina Monteiro
de Lyra Costa, João Marcelo Tavares
Roberto, Robertina Pinheiro

Powiązania:

https://bibliotekanauki.pl/articles/2121389.pdf

Data publikacji:

2022

Wydawca:

Towarzystwo Pomocy Doraźnej

Źródło:

Critical Care Innovations; 2022, 5, 3; 42-49
2545-2533

Pojawia się w:

Critical Care Innovations

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

How do Pre-service Teachers Rate ICT Opportunity for Education? A Study in Perspective of the SCOT Theory

Autorzy:

Klichowski, Michał
Smaniotto Costa, Carlos

Powiązania:

https://bibliotekanauki.pl/articles/2036222.pdf

Data publikacji:

2015-12-31

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

ICT
preservice teachers
SCOT theory
technopedagogical approach
TPACK

Opis:

ICT have great educational potential. Research shows, however, that ICT are not widely incorporated into education. This situation is presented by the SCOT theory, which shows that teacher ratings of new ICT are consistently and invariably negative. We decided to verify how preservice teachers rate the ICT solutions and the consistency of their ratings. Results showed that preservice teachers are indeed relatively consistent and invariable in their ratings. Moreover, those ICT solutions that can be incorporated into the traditional educational model without requiring significant technological framework receive better ratings than those that deviate from this model by requiring significant need for implementation of technology to be used in the educational setting.

Źródło:

Kultura i Edukacja; 2015, 4 (110); 152-168
1230-266X

Pojawia się w:

Kultura i Edukacja

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Full-fledged temporal processing : bridging the gap between deep linguistic processing and temporal extraction

Autorzy:

Costa, F.
Branco, A.

Powiązania:

https://bibliotekanauki.pl/articles/103861.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Instytut Podstaw Informatyki PAN

Tematy:

temporal processing
temporal extraction
tense
aspect
hybrid approaches
deep linguistic processing
shallow linguistic processing

Opis:

The full-fledged processing of temporal information presents specific challenges. These difficulties largely stem from the fact that the temporal meaning conveyed by grammatical means interacts with many extra-linguistic factors (world knowledge, causality, calendar systems, reasoning). This article proposes a novel approach to this problem, based on a hybrid strategy that explores the complementarity of the symbolic and probabilistic methods. A specialized temporal extraction system is combined with a deep linguistic processing grammar. The temporal extraction system extracts eventualities, times and dates mentioned in text, and also temporal relations between them, in line with the tasks of the recent TempEval challenges; and uses machine learning techniques to draw from different sources of information (grammatical and extra-grammatical) even if it is not explicitly known how these combine to produce the final temporal meaning being expressed. In turn, the deep computational grammar delivers richer truth-conditional meaning representations of input sentences, which include a principled representation of temporal information, on which higher level tasks, including reasoning, can be based. These deep semantic representations are extended and improved according to the output of the aforementioned temporal extraction module. The prototype implemented shows performance results that increase the quality of the temporal meaning representations and are better than the performance of each of the two components in isolation.

Źródło:

Journal of Language Modelling; 2013, 1, 1; 97-154
2299-856X
2299-8470

Pojawia się w:

Journal of Language Modelling

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

A idade de Ouro da Medicina Islâmica: evolução e declínio

Autorzy:

Parente da Costa, Marta Silva Teles
Borges de Meneses, Ramiro Délio

Powiązania:

https://bibliotekanauki.pl/articles/2148176.pdf

Data publikacji:

2018

Wydawca:

Instytut Studiów Międzynarodowych i Edukacji Humanum

Tematy:

Islamic medicine
ilness
traitments
technology
surgery
philosophy
and faith in Coran

Opis:

Early Western accounts of arabian medicine reflected the legacy of conflict rather than na analysis of islamic medicine as a component of a system of faith and a means of dealing with yhe universal problema of illness. For many European scholars, arabian medicine was significantonly in terms of the role it played in preserving greekliterature during the European Dark ages according to science and technology. There isn`t a good medicine and pharmacy. Therefore, arabian medicine was understood as synonymous with arabic medicine.

Źródło:

Prosopon. Europejskie Studia Społeczno-Humanistyczne; 2018, 3(24); 17-35
1730-0266

Pojawia się w:

Prosopon. Europejskie Studia Społeczno-Humanistyczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Understanding the HRM systems double contribution to radical and incremental innovation in SMEs: A configurational approach

Autorzy:

Curado, Carla
Gonçalves, Tiago
Brito, João Costa

Powiązania:

https://bibliotekanauki.pl/articles/2120141.pdf

Data publikacji:

2022

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Human Resources Management Systems
incremental innovation
radical innovation
SME
fsQCA

Opis:

Aim/purpose – In this paper, we explore the contribution of Human Resource Management Systems (HRMS) to innovation in SMEs. We consider two HRMS with different orientations: Commitment HRMS (focusing on long-term career development to increase employees’ creativity) and Collaboration HRMS (focusing on the use of external human capital to achieve innovation). We believe that SMEs’ radical and incremental innovation follow different paths from a configurational perspective. We want to understand how the two HRMS influence radical and incremental innovation, consequently, we explore the contributions of Commitment HRMS and Collaboration HRMS. Design/methodology/approach – We apply a set-theoretic method, an analytic quantitative and qualitative technique to approach data – fuzzy-set Qualitative Comparative Analysis (fsQCA) – to test our models. We use a sample of 377 Portuguese SMEs from across industries. Findings – Results show there are two pathways that lead SMEs to high levels of incremental innovation and three alternative paths that originate high levels of radical innovation. By contrast, there are ways that lead to lower levels of incremental (two options) and radical innovation (three options). Research implications/limitations – We provide propositions for theory development on the contribution of HRMS to innovation. Managerial contributions regard the several options provided to SME managers in search of innovation. Limitations regard the lack of generalization power of results due to the cross-sectional nature of the work. However, the research design is replicable without restrictions. Originality/value/contribution – We suggest that SMEs’ radical and incremental innovation follow different paths from a configurational perspective. With this study, we contribute to showing the diversity of ways to reach higher innovation levels at SMEs, so that managers know the alternatives they have at their disposal. Additionally, we reveal the ways that lead to lower innovation levels at SMEs, so we alert managers to the undesired pathways they should be cautious about.

Źródło:

Journal of Economics and Management; 2022, 44; 315-343
1732-1948

Pojawia się w:

Journal of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

La imagen del cuerpo de las mujeres a través de la prensa en España y Costa Rica. Estudio de caso: Karina Bolaños y Olvido Hormigos
How Women are Stereotyped by the Media in Spain and Costa Rica. Case Study: Karina Bolaños and Olvido Hormigos

Autorzy:

TENA PÉREZ, Tania

Powiązania:

https://bibliotekanauki.pl/articles/486260.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego

Tematy:

medios de comunicación
feminismo
estudios de género
imagen de mujeres
Karina Bolaños
Olvido Hormigos
media
feminism
gender studies
women's image

Opis:

Los medios de comunicación, en su papel de agentes de socialización, actúan como transmiso-res de una cultura patriarcal. La prensa sigue reproduciendo diariamente mensajes violentos hacia las mujeres y los/as profesionales de la información continúan sin tener una adecuada formación en género que permita enfocar los contenidos desde una perspectiva feminista. Ana-lizar cómo la prensa cuenta y mediatiza los cuerpos de las mujeres es fundamental para poder detectar las malas prácticas periodísticas y generar nuevos modelos comunicativos. España y Costa Rica, con los casos de Olvido Hormigos y Karina Bolaños, nos servirán de ejemplo para poder estudiar en profundidad la violencia que se ejerce desde el ámbito periodístico.
The media, in their role as agents of socialization, act as channels promoting a patriarchal cul-ture. Day after day, the press delivers aggressive messages towards women in a world where journalists lack in adequate training that would allow them to deliver their messages through a more egalitarian vision. It is essential to analyze the biased way in which Women’s image is portrayed through our press and other media in order to be able to spot wrong journalistic habits and therefore be able to establish new communication models. Two great examples that will help us to thoroughly study the violence with wich women are depicted in our media are those of Olvido Hormigos (Spain) and Karina Bolaños (Costa Rica).

Źródło:

Revista del CESLA. International Latin American Studies Review; 2018, 21; 105-126
1641-4713

Pojawia się w:

Revista del CESLA. International Latin American Studies Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Can concurrent teaching promote equal biomechanical adaptations at front crawl and backstroke swimming?

Autorzy:

Costa, M. J.
Barbosa, T. M.
Morais, J. E.
Miranda, S.
Marinho, D. A.

Powiązania:

https://bibliotekanauki.pl/articles/307054.pdf

Data publikacji:

2017

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

ekspertyza
kinematyka ruchu
pływak
expertise
kinematics
swimmer

Opis:

Purpose: The biomechanical adaptations in front crawl and backstroke swimming, as influenced by the implementation of a concurrent teaching programme were analysed. Methods: Sixteen participants (19.75 ± 1.13 years) underwent a 30 weeks intervention characterized by an increasing complexity to accomplish motor skills in the following order: (i) lower limbs propulsion; (ii) lower limbs propulsion synchronized with breathing cycle; (iii) lower limbs propulsion synchronized with one upper limb action; (iv) lower limbs propulsion synchronized with both breathing cycle and one upper limb action; (v) full swimming stroke; (vi) motor trajectory of the arms stroke. Performance and biomechanics were measured at front crawl and backstroke during three time points throughout the programme. Results: There were improvements in performance over time at front crawl (21.49 s to 19.99 s, p < 0.01) and backstroke (27.15 s to 24.60 s, p = 0.01). Significant improvements were found for velocity at front crawl (1.13 m/s to 1.22 m/s, p < 0.01) and backstroke (0.92 m/s to 1.00 m/s, p < 0.01). Stroke frequency increased at backstroke (0.64 to 0.73 Hz, p = 0.01), while the intra-cyclic variation of the velocity decreased at front crawl (0.13 to 0.12%, p = 0.02). There was also a moderate-high inter-subject variability in response to the programme. Conclusions: These findings prove that a programme of 30 weeks teaching concurrently front crawl and backstroke is effective to promote similar biomechanical adaptations in low-tier swimmers. However, each subject shows an individual response to better adapt the biomechanical actions and to reach a higher level of expertise.

Źródło:

Acta of Bioengineering and Biomechanics; 2017, 19, 1; 81-88
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Tracking young talented swimmers : follow-up of performance and its biomechanical determinant factors

Autorzy:

Morais, J. E.
Saavedra, J. M.
Costa, M. J.
Silva, A. J.
Marinho, D. A.
Barbosa, T. M.

Powiązania:

https://bibliotekanauki.pl/articles/951824.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

prepubescent swimmers
longitudinal assessment
kinematics
drag force
anthropometrics
efficiency
kinematyka
efektywność
pływak
biomechanika

Opis:

The aim of the study was to follow-up the stability of young talented swimmers’ performance and its biomechanical determinant factors (i.e., anthropometrics, kinematics, hydrodynamics and efficiency) during a competitive season. Thirty three (15 boys and 18 girls) young swimmers (overall: 11.81 ± 0.75 years old and Tanner stages 1–2 by self-evaluation) were evaluated. Performance, anthropometrics, hydrodynamics, kinematics and efficiency variables were assessed at three moments during a competitive season. Performance had a significant improvement (with minimum effect size) and a moderate-very high stability throughout the season. In the anthropometrics domain all variables increased significantly (ranging from without to minimum effect size) between moments and had a moderate-very high stability. Hydrodynamics presented no variations between all moments and had a low-very high stability throughout the season. In the kinematics domain, there were no variations between moment one and three, except for an increase in stroke frequency (without size effect). Speed fluctuation remained constant, with no significant variations. All kinematic variables had a low-very high stability. Efficiency variables did not present variations between moment one and three and had a low-moderate stability. Overall, young swimmers showed a minimum improvement in performance and in anthropometric factors; and a moderate stability of performance and its determinant factors (i.e., anthropometrics, hydrodynamics, kinematics and efficiency) during the competitive season.

Źródło:

Acta of Bioengineering and Biomechanics; 2013, 15, 3; 129-138
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

A sixth-order finite volume method for the 1D biharmonic operator: Application to intramedullary nail simulation

Autorzy:

Costa, R.
Machado, G. J.
Clain, S.

Powiązania:

https://bibliotekanauki.pl/articles/330268.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

finite volume method
polynomial reconstruction operator
harmonic operator
biharmonic operator
high order method

Opis:

A new very high-order finite volume method to solve problems with harmonic and biharmonic operators for one-dimensional geometries is proposed. The main ingredient is polynomial reconstruction based on local interpolations of mean values providing accurate approximations of the solution up to the sixth-order accuracy. First developed with the harmonic operator, an extension for the biharmonic operator is obtained, which allows designing a very high-order finite volume scheme where the solution is obtained by solving a matrix-free problem. An application in elasticity coupling the two operators is presented. We consider a beam subject to a combination of tensile and bending loads, where the main goal is the stress critical point determination for an intramedullary nail.

Źródło:

International Journal of Applied Mathematics and Computer Science; 2015, 25, 3; 529-537
1641-876X
2083-8492

Pojawia się w:

International Journal of Applied Mathematics and Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

¿Es solo un chiste? Reconstruyendo los significados del derecho al sufragio femenino en Costa Rica, bajo la lupa del humor gráfico (1949-1953)
It’s Just a Joke? Re-Making the Meanings of Women Rights to Vote Throughout the Lenses of Graphic Humor in Costa Rica (1949-1953)

Autorzy:

MARTÍNEZ TOLEDO, Yanet

Powiązania:

https://bibliotekanauki.pl/articles/486074.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego

Tematy:

humor gráfico
representación social de las mujeres
mujeres en política
violencia simbólica
graphic humor
social representation of women
women in politics
symbolic violence

Opis:

La relación entre humor y feminismo ha sido siempre compleja. Especialmente, por el rol que ha jugado históricamente el humor en la reproducción de estereotipos de género y la contribu-ción a la subordinación de las mujeres tanto en el espacio doméstico como en la esfera pública. El objetivo de este artículo es analizar cómo, mediante el humor gráfico, se representa a las mujeres, y sus luchas por alcanzar el derecho al sufragio. Para ello se realiza un análisis mul-timodal que articula texto escrito y visual para identificar las representaciones de las mujeres como grupos, las mujeres de forma individual, las demandas de derechos de estas mujeres y las opiniones sociales al respecto y que se representan en el discurso del humor gráfico en la prensa costarricense, entre 1947 y 1953. Para ello se realiza un análisis, con enfoque cualitativo, de caricaturas publicadas en los sema-narios El Trapiche y La Semana Cómica, y en el Diario de Costa Rica, en el período antes señalado. Los criterios de selección incluyen: que las mujeres sean sujetos en las imágenes, que se evidencie rasgos de participación política y que, además, de imagen, la caricatura con-tenga texto, que permita realizar un contraste entre lenguaje hablado y escrito. Para el análisis se emplean elementos de Análisis Multimodal del Discurso. Uno de los resultados principales es, además de la reproducción de estereotipos acerca de la participación política de las mujeres, señalar cómo se reproducen las nociones dicotómicas de lo que es ser mujer y el peligro que estas representan para los hombres como grupo político.
The connection between feminism and humor have always been at least complicated because of the role played by humor in the reproduction of gender stereotypes and its contribution to the subordination of women, both in the domestic space and the public sphere. This paper aims to analyze how, through graphic humor, women are represented, and their struggles to achieve the right to suffrage through the use of critical analysis of multimodal dis-course in order to identify the representations of women as groups, women individually, the demands of women’s rights in three Costa Rican papers, between 1947 and 1953: El Trapiche and La Semana Cómica, and Diario de Costa Rica. One of the main results is, in addition to the reproduction of stereotypes about the political participation of women and women in general, and how those stereotypes are constructed through the language of common sense and male gaze.

Źródło:

Revista del CESLA. International Latin American Studies Review; 2018, 21; 67-87
1641-4713

Pojawia się w:

Revista del CESLA. International Latin American Studies Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Development of an automation system for iodine-125 brachytherapy seed encapsulated by Nd:YAG laser welding

Autorzy:

Somessari, S. L.
Feher, A.
Sprenger, F. E.
Rostelato, M. E. C. M.
da Costa, F. E.
Calvo, W. A. P.

Powiązania:

https://bibliotekanauki.pl/articles/147664.pdf

Data publikacji:

2011

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

iodine-125 seeds
prostate cancer
brachytherapy
Nd:YAG laser welding

Opis:

The aim of this work is to develop an automation system for iodine-125 radioactive seed production by Nd:YAG laser welding, which has been used successfully in low dose rate (LDR) brachytherapy treatment. This small seed consists of a welded titanium capsule, with 0.8 mm in diameter and 4.5 mm in length, containing iodine-125 adsorbed onto a silver rod. The iodine-125 seeds are implanted into the human prostate to irradiate the tumor for cancer treatment. Nowadays, the Radiation Technology Center, at Institute for Nuclear and Energy Research, Săo Paulo, Brazil (IPEN-CNEN/SP) imports and distributes 36,000 iodine-125 seeds per year, for the clinics and hospitals in the country. However, the Brazilian market potential is now over 8,000 iodine-125 seeds per month. The local production of these iodine-125 radioactive sources became a priority for the Institute, in order to reduce the price and the problems of prostate cancer management. It will permit to spread their use to a larger number of patients in Brazil. On the other hand, the industrial automation plays an important role for iodine-125 seeds in order to increase the productivity, with high quality and assurance, avoiding human factors, implementing and operating with good manufacturing practices (GMP). The technology consists of appliance electronic and electro-mechanical parts and components to control machines and processes. The automation system technology for iodine-125 seed production developed in this work was mainly assembled employing a programmable logic controller (PLC), a stepper motor, an Nd:YAG laser welding machine and a supervisory. The statistical repeatability of correctly encapsulated sealed sources with this automation system is greater than 95 per cent.

Źródło:

Nukleonika; 2011, 56, 4; 369-374
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Effect of Shot Peening With Glass Microspheres on the Fatigue Behavior of a Low Carbon Steel

Autorzy:

de Lacerda, J. C.
Pereira, I. R.
Costa, J. M. G.
Pinto, J. S.
Souza, H. F. M.
Fonseca, M. A.

Powiązania:

https://bibliotekanauki.pl/articles/352156.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

fatigue
shot peening
Wöhler curve
low carbon steel
glass microspheres

Opis:

The present work has the objective of studying the effect of shot peening with glass microspheres on SAE 1020 steel in its resistance to fatigue. Fatigue tests were carried out by rotary bending with load control and loading on balance in specimens with and without shot peening. A rotation speed of approximately 750 rpm (12.5 Hz) was employed in the fatigue tests. Vickers microhardness tests were performed in order to verify the surface hardening produced by shot peening with glass microspheres. Analysis of the steel surface and fatigue fractures was performed using scanning electron microscopy (SEM). Fatigue tests were performed in order to obtain S-N curves (Wöhler curves). It was observed that shot peening with glass microspheres improved the fatigue strength of the steel at high cycle.

Źródło:

Archives of Metallurgy and Materials; 2019, 64, 4; 1513-1518
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

A study about the measurement method of the homogeneity of radioactivity along an iridium-192 wire used in brachytherapy

Autorzy:

Costa, O. L.
Calvo, W. A. P.
Zeituni, C. A.
Rostelato, M. E. C. M.
Moura, J. A.
Feher, A.
Souza, C. D.
Somessari, S. L.

Powiązania:

https://bibliotekanauki.pl/articles/148238.pdf

Data publikacji:

2014

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

iridium-192
iridium wire
low dose rate brachytherapy
quality control
cancer treatment
radioactive sources production

Opis:

The Nuclear and Energy Research Institute has produced, since 1998, iridium-192 wires used in low dose rate brachytherapy. In the paper the authors studied the influence of wire profile on the homogeneity distribution of radioactivity of iridium-192 along the wire. The authors propose the improvements in the quality control procedure that will provide more accurate measurement data and suggest changes in control devices.

Źródło:

Nukleonika; 2014, 59, 1; 37-39
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

A comparative study on the performance of radiation detectors from the HgI2 crystals grown by different techniques

Autorzy:

Martins, J. F. T.
Costa, F. E.
dos Santos, R. A.
de Mesquita, C. H.
Hamada, M. M.

Powiązania:

https://bibliotekanauki.pl/articles/146916.pdf

Data publikacji:

2012

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

crystal growth
iodide mercury crystal
physical vapor transport (PVT)
radiation detector
semiconductor crystal

Opis:

In this work, the establishment of a technology for HgI2 purification and crystal growth is described, aiming at a future application of this crystal as a room temperature radiation semiconductor detector. Two methods of crystal growth were studied in the development of this work: (1) physical vapor transport (PVT) and (2) saturated solution from dimethylsulphoxide (DMSO) complexes. In order to evaluate the crystals obtained using each of these methods, systematic measurements were carried out for determining the stoichiometry, structure, orientation, surface morphology and impurity of the crystal. The influence of these physicochemical properties of the crystals developed was evaluated in terms of their performance as a radiation detector. The best response to radiation was found for the crystals grown by the PVT technique. Significant improvement in the performance of HgI2 radiation detector was found, purifying the crystal by means of two successive growths by the PVT technique.

Źródło:

Nukleonika; 2012, 57, 4; 555-562
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

A fine line between red and dark: Anti-communist film-induced tourism
Cienka linia między czerwienią a mrokiem: antykomunistyczna turystyka filmowa

Autorzy:

Handayani, Bintang
Costa, Jean Henrique

Powiązania:

https://bibliotekanauki.pl/articles/2033262.pdf

Data publikacji:

2021-12-03

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

muzea antykomunistyczne
mroczna turystyka (dark tourism)
turystyka filmowa
czerwona turystyka
Indonezja
anti-communism museums
dark tourism
film-induced tourism
red tourism
Indonesia

Opis:

This study explores the ‘30 September Movement’ that staged a communist coup in 1965 as travel motivation for an anti-communism museum. ‘Framing’ and ‘uses and gratifications’ theories were used for this case study. The findings concluded that negative film plots and scenes are signature themes that can be used as attributes of red or dark film motivations for tourism. The use of theories, such as ‘framing’ and ‘uses and gratifications’, along with reflexive thematic analysis has provided unique and valuable theoretical insights that may be overlooked by other analyses.
W niniejszej pracy został zgłębiony temat Ruchu 30 Września – ruchu politycznego odpowiedzialnego za nieudaną próbę komunistycznego zamachu stanu w 1965 r. – jako bodźca do zwiedzania muzeów antykomunistycznych. W analizowanym studium przypadku wykorzystano teorię ramową oraz użytkowania i korzyści. Wyniki badania pozwoliły autorom dojść do wniosku, że negatywne fabuły i sceny filmowe mogą zostać wykorzystane jako czynniki motywujące do podejmowania czerwonej lub mrocznej turystyki filmowej. Odwołanie się do takich teorii, jak teoria ramowa czy teoria użytkowania i gratyfikacji wraz z refleksyjną analizą tematyczną, zapewniło możliwość poczynienia unikatowych i wartościowych obserwacji teoretycznych, które mogły zostać pominięte w innych opracowaniach.

Źródło:

Turyzm; 2021, 31, 2; 7-23
0867-5856
2080-6922

Pojawia się w:

Turyzm

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Seizure as first manifestation of endocarditis in a patient with metastatic pancreatic adenocarcinoma: a case report

Autorzy:

Ciuffo Almeida, Marcel Pina
Santos da Silva Costa, Isabela Bispo
Feres de Almeida, Maria Carolina
Bittencourt Viana Cruz, Cecília Beatriz
Itala Rizk, Stéphanie
Abrahão Hajjar, Ludhmila

Powiązania:

https://bibliotekanauki.pl/articles/1035676.pdf

Data publikacji:

2019

Wydawca:

Medical Education

Tematy:

cancer
cardio-oncology
nonbacterial thrombotic endocarditis

Opis:

Nonbacterial thrombotic endocarditis is a potentially overlooked condition that involves the formation of sterile fibrin vegetations on heart valve leaflets in cancer patients. This condition can lead to valvular dysfunction, heart failure and systemic embolization. The pathogenesis depends on hypercoagulable states which are common in malignancy scenarios. Diagnosis requires the presence of valvular vegetations and the absence of infection.

Źródło:

OncoReview; 2019, 9, 4; 92-95
2450-6125

Pojawia się w:

OncoReview

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Robotic Process Automation (RPA) adoption: a systematic literature review

Autorzy:

Costa, Diogo António da Silva
Mamede, Henrique São
Silva, Miguel Mira da

Powiązania:

https://bibliotekanauki.pl/articles/2105322.pdf

Data publikacji:

2022

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

RPA
robotic process automation
software robot
digital worker
adoption
implementation
zrobotyzowana automatyzacja procesów
programowanie robota
pracownik cyfrowy
adaptacja
wdrażanie

Opis:

Robotic process automation (RPA) is a recent technology that has recently become increasingly adopted by companies as a solution for employees to focus on higher complexity and more valuable tasks while delegating routine, monotonous and rulebased tasks to their digital colleagues. The increased interest, reflected in the increasing number of articles regarding approaches and test cases, has triggered the necessity for a summary that could extract the more generalisable ideas and concepts about these software robots. This paper used a Systematic Literature Review (SLR) approach to find and synthesise information from articles obtained on this subject. This research identified the most general implementation approaches of successful RPA adoption cases, observed benefits, challenges commonly faced by organisations, characteristics that make processes more suitable for RPA, and research gaps in the current literature. The findings presented in this paper have two purposes. The first is to provide a way for companies and organisations to become more familiar with good practices regarding the adoption of robotic process automation. The second is to foster further research on the subject by complementing the current knowledge and proposing new paths for research.

Źródło:

Engineering Management in Production and Services; 2022, 14, 2; 1--12
2543-6597
2543-912X

Pojawia się w:

Engineering Management in Production and Services

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Development of an irradiation system for a small size continuous run multipurpose gamma irradiator

Autorzy:

Calvo, W. A. P.
Rela, P. R.
Napolitano, C. M.
Kodama, Y.
Omi, N. M.
da Costa, F.
de Andrade e Silva, L. G.

Powiązania:

https://bibliotekanauki.pl/articles/148041.pdf

Data publikacji:

2009

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

multipurpose irradiator
gamma irradiator
compact irradiator
cobalt-60 irradiator
gamma facility

Opis:

The Radiation Technology Center from IPEN-CNEN/SP, Brazil, developed a revolutionary design and national technology, a small-sized continuous run and multipurpose industrial gamma irradiator, to be used as a demonstration facility for manufacturers and contract service companies, which need economical and logistical in-house irradiation system alternatives. Also, to be useful for supporting the local scientific community on development of products and process using gamma radiation, assisting the traditional and potential users on process validation, training and qualification of operators and radioprotection officers. The developed technology for this facility consists of a continuous tote box transport system, comprising a single concrete vault, where the automated transport system of products inside and outside of the irradiator utilizes a rotating door, integrated with the shielding, avoiding the traditional maze configuration. Covering 76 m2 of floor area, the irradiator design is a product overlap sources and the maximum capacity of cobalt-60 wet sources is 37 PBq. The performed qualification program of this multipurpose irradiator was based on AAMI/ISO 11137 standard, which recommends the inclusion of the following elements: installation and process qualification. The initial load of the multipurpose irradiator was 3.4 PBq with 13 cobalt-60 sources model C-188, supplied by MDS Nordion – Canada. For irradiator dose optimization, the source distribution was done using the software Cadgamma developed by IPEN-CNEN/SP. The polymethylmetacrylate (PMMA) dosimeter system, certified by the International Dose Assurance Service (IDAS) of the International Atomic Energy Agency (IAEA) was used for irradiator dose mapping. The economic analysis, performance concerning with dose uniformity and cobalt-60 utilization efficiency were calculated and compared with other commercial gamma irradiators available on the market.

Źródło:

Nukleonika; 2009, 54, 2; 93-97
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Using the FITradeoff method to solve a shopping mall location problem in the northeastern countryside of Brazil

Autorzy:

Ribeiro, Manoel Lucas Sousa
Roselli, Lucia Reis Peixoto
Frej, Eduarda Asfora
Almeida de, Adiel Teixeira
Morais, Danielle Costa

Powiązania:

https://bibliotekanauki.pl/articles/2183429.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

location problem
shopping mall
FITradeoffmethod
elicitation by decomposition
holistic evaluation
multi-criteria decision making/aiding
MCDM/A

Opis:

This paper presents a practical case involving a shopping mall location problem in the northeast countryside of Brazil. In this problem, conflicting objectives have been expressed in terms of seven criteria. Then, ten cities of the northeastern countryside have been selected to compose the space of actions. The problem plays a special role since Brazil is a big country that requires investments in the countryside. Thus, the shopping mall aims to stimulate economic growth in the respective region. In the study, this multi-objective problem is solved using the FITradeoff method. In FITradeoff, the combination of the paradigms of holistic evaluation and elicitation by decomposition in preference modeling are well explored, bringing different perspectives for the decision-maker during the decision process.

Źródło:

Control and Cybernetics; 2021, 50, 1; 109--126
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Synthesis, characterization and catalytic properties of SAPO-11 molecular sieve synthesized in hydrothermal media using di-isopropylamine as template

Autorzy:

Chellappa, T.
Costa, M. J. F.
Nascimento, W. A.
Ferreira De Lima, L.
Bassan, I. A.
Tavares, M.
Fernandes, V. J.
Menezes, A.
Guilherme Meira, L.
Telesforo Nóbrega De Medeiros, J.
Maribondo Do Nascimento, R.

Powiązania:

https://bibliotekanauki.pl/articles/200372.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

microporous materials
SAPO-11
characterization
catalytic activity
molecular sieves

Opis:

A microporous SAPO-11 Molecular sieve was successfully synthesized by the hydrothermal method, using a single agent, as an organic template: di-isopropylamine (DIPA). The obtained solid was calcined at 550^◦C for three hours, after which the flow of nitrogen was exchanged for that of synthetic air and submitted for another ten hours of calcination, so as to remove the single agent: di-isopropylamine, which after the removal of the template could be observed by the high crystallization of the sample. Furthermore, the molecular sieve was characterized by XRD, SEM, TG-DTG and N2 adsorption desorption (BET analysis). The obtained catalyst proved to have a high potential catalytic activity and selectivity, through the obtained characterization results, exhibiting good hydrothermal stability. The catalytic performance of SAPO-11 was tested by the deactivation/regenerability of the coked sample, furthered by cracking of n-hexane reaction and high olefins selectivity was obtained.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 3; 481-488
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Cost-effective approach to lung cancer risk for a radiological dispersal device (RDD) scenario

Autorzy:

Costa, Karolina P. S.
Lima, Sergio X.
Brum, Tercio
Lima, Zelmo R.
Amorim, Jose C. C.
Healy, Matthew J. F.
Vital, Helio C.
Prah, Matjaž
Andrade, Edson R.

Powiązania:

https://bibliotekanauki.pl/articles/146560.pdf

Data publikacji:

2019

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

environment
contamination
radiation
cost-effectiveness
risk

Opis:

A release of radioactive material into the environment can lead to hazardous exposure of the population and serious future concerns about health issues such as an increased incidence of cancer. In this context, a practical methodology capable of providing useful basic information from the scenario can be valuable for immediate decisions and future risk assessment. For this work, the simulation of a radiological dispersal device (RDD) filled with americium-241 was considered. The radiation dose simulated by the HotSpot code was used as an input to the epidemiological equations from BEIR V producing the data used to assess the risk of lung cancer development. The methodology could be useful in providing training for responders aimed to the initial support addressed to decision-making for emergency response at the early phase of an RDD scenario. The results from the simulation allow estimating (a) the size of the potentially affected population, (b) the type of protection action considering gender and location of the individuals, (c) the absorbed doses, (d) the matrix of lung cancer incidence predictions over a period of 5 years, and (e) the cost-effectiveness in the initial decision environment.

Źródło:

Nukleonika; 2019, 64, 4; 123-129
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Educational practices in the university - a longituinal study in the teacher training master in the university of Zaragoza
Praktyki edukacyjne na uniwersytecie - badanie kształcenia nauczycieli na uniwersytecie w Saragossie

Autorzy:

Soler Costa, Rebeca
Soler Santaliestra, Juan Ramón

Powiązania:

https://bibliotekanauki.pl/articles/564512.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego

Tematy:

longitudinal study
evaluation
skills
innovation processes
student learning
badanie podłużne
ocena
umiejętności
innowacje
nauczanie studentów

Opis:

The recent implementation in the university of professionalizing Masters has meant a considerable increase in the interest of students towards the study of the different subjects in order to improve their expertise. While in some cases it is a prerequisite for access to public opposition, in many others, the Masters allows more extensive knowledge gained throughout university degree. This type of educational practices that the European Higher Education Area (EHEA) has introduced, i.e., the derivatives of education policies, is justified by the process of European convergence. From Brussels come new details and recommendations which the various member States should incorporate into their educational system, whether formal or non-formal education. To this end, this paper shows the results of a research carried out in the year 2009/2010 in the Teacher Training Masters for High School Teachers of the University of Zaragoza. The aim was to analyse how assessment processes were developing, with what procedures, techniques, types, etc., with the aim of introducing innovation processes leading to improved student learning. This longitudinal study is based on multiple cases whose statistically representative sample consists of 124 students and is developed with quantitative and qualitative methodology. Results of this research conclude that it is possible to introduce other types of evaluation techniques contributing to promote meaningful, collaborative, social and open learning.
Ostatnie zmiany wdrażane na uniwersytecie kształcącym nauczycieli spowodowały znaczący wzrost zainteresowania dodatkowym kształceniem na innych kierunkach w celu poszerzenia kompetencji. W niektórych przypadkach jest to spowodowane wymaganiami, a w innych tym, że tytuł magistra ułatwia dostęp do poszerzania wiedzy. Typ edukacyjnych praktyk, które wprowadziła EHEA (European Higher Education Area), jest uzasadniony procesem integracji europejskiej. Z Brukseli przesyłane są nowe szczegóły i rekomendacje, które państwa członkowskie powinny wprowadzić do swoich systemów edukacyjnych. Artykuł przedstawia wyniki badań przeprowadzanych w latach 2009/2010 na Uniwersytecie w Saragossie. Celem badania była analiza tego, w jaki sposób rozwijał się proces oceny nauczania, jakie stosowano procedury i techniki. Badanie oparte jest na opiniach grupy 124 studentów i zawiera analizy jakościowe i ilościowe. Wyniki badań wskazują, że możliwe jest wprowadzenie innych typów technik oceny, aby przyczynić się do promocji zrozumiałego, otwartego nauczania opartego na współpracy.

Źródło:

Kultura – Przemiany – Edukacja; 2016, 4; 265-278
2300-9888
2544-1205

Pojawia się w:

Kultura – Przemiany – Edukacja

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

An Expert System Coupled With a Hierarchical Structure of Fuzzy Neural Networks for Fault Diagnosis

Autorzy:

Calado, J. M. F.
Costa, I. S.

Powiązania:

https://bibliotekanauki.pl/articles/908283.pdf

Data publikacji:

1999

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

rozpoznanie błędu
wykrywanie błędu
system ekspertowy
sieć neuronowa rozmyta
fault diagnosis
fault detection
fault isolation
shallow knowledge
deep knowledge
expert system
fuzzy neural network
abrupt faults
incipient faults

Opis:

An on-line fault diagnosis system, designed to be robust to the normal transient behaviour of the process, is described. The overall system consists of an expert system cascade with a hierarchical structure of fuzzy neural networks, corresponding to a multi-stage fault detection and isolation system. The fault detection is performed through the expert system by means of fault detection heuristic rules, generated from deep and shallow knowledge of the process under consideration. If a fault is detected, the hierarchical structure of fuzzy neural networks starts and it performs the fault isolation task. The structure of this diagnosis system was designed to allow for the diagnosis of single and multiple simultaneous abrupt and incipient faults from only single abrupt fault symptoms. Also, it combines the advantages of both fuzzy reasoning and neural networks learning capacity. A continuous binary distillation column has been used as a test bed of the current approach. Single, double and triple simultaneous abrupt faults, as well as incipient faults, have been considered. The preliminary results obtained show a good accuracy, even in the case of multiple faults.

Źródło:

International Journal of Applied Mathematics and Computer Science; 1999, 9, 3; 667-687
1641-876X
2083-8492

Pojawia się w:

International Journal of Applied Mathematics and Computer Science

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Simulation modelling of Vitória-Minas closed-loop rail network
Modelagem de simulação do circuito fechado da ferrovia Vitória Á Minas

Autorzy:

Faria, C. H. F. de
Cruz, M. M. da Costa

Powiązania:

https://bibliotekanauki.pl/articles/375477.pdf

Data publikacji:

2015

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

railway
simulation
closed loop
heavy haul
transportation of iron ore
rolling stock
kolej żelazna
symulacja
pętla zamknięta
transport rud żelaza
tabor kolejowy

Opis:

This paper presents a closed loop simulation model that represents the mining logistics chain of the Vitória Minas Railway (VMR), Brazil. The simulator includes the loading process, circulation of loaded trains, unloading of ores for external and internal markets and the distribution of empty trains for new loads. General cargo and passengers trains are also included in the model, which, along with the queues formed in the circulation and the preventive and corrective maintenance of rolling stock, tracks and equipment, interfere with the transportation of iron ore. The primary objective of the iron ore transport is to meet the daily loading and unloading schedules and minimize queues by maximizing the operations at the loading and unloading points. The VMR simulator developed uses macro-mesoscopic approach with Monte Carlo simulation. To validate the simulator, we used actual data of the railway and compared with reality. We obtained a very good adhesion to the value of 2.9% for the validation scenario (Scenario 1) and 3.4% for the scenario with reducing the number of lots of wagons (Scenario 2). We concluded with this simulation that it is possible to reduce the number of GDE wagons without reducing the current level of productivity of the rail system.
Este artigo apresenta o modelo de simulação do circuito fechado da rede logística de minério de ferro da ferrovia Vitória Á Minas (VMR), Brasil. O simulador inclui o processo de carregamento, circulação dos trens carregados, descarregamento para os mercados externos e internos e a distribuição dos trens vazios para novos carregamentos. Os trens de carga geral e de passageiros também foram incluídos no modelo, bem como suas filas de formação e as manutenções preventivas e corretivas do material rodante, que interferem no transporte do minério de ferro. O principal objetivo do transporte de minério de ferro é atender as programações de carregamento e descarregamento e minimizar as filas maximizando as operações nos pontos de carregamento e descarregamento. O simulador VMR desenvolvido utiliza uma abordagem macro-mesoscópica de simulação de Monte Carlo. Para validar o simulador, foi utilizado dados da ferrovia e comparado com a realidade. Obtivemos uma aderência muito de 2,9% para o cenário de validação (cenário 1) e 3,4% para o cenário com a redução do número de lotes de vagão (cenário 2). Concluímos que com esta simulação é possível reduz o número de lotes de vagões GDE sem reduzir a produtividade da ferrovia.

Źródło:

Transport Problems; 2015, T. 10, z. spec.; 125-139
1896-0596
2300-861X

Pojawia się w:

Transport Problems

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

A COMPARISON OF PHYSICAL FITNESS LEVELS AND BODY MASS INDEX IN STUDENTS FROM 5TH TO 9TH GRADE IN PHYSICAL EDUCATION CLASSES DEPENDING ON URBAN OR RURAL PLACE OF RESIDENCE

Autorzy:

Costa, Aldo
Resende, Ana
Honório, Samuel
O'Hara, Kelly
Vicente, António
Martins, Júlio

Powiązania:

https://bibliotekanauki.pl/articles/449154.pdf

Data publikacji:

2018-10-11

Wydawca:

Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii

Tematy:

Physical fitness, BMI, Children, Adolescents, Physical Education, Rural, Urban

Opis:

Introduction: The main purpose of this study was to compare the physical fitness levels and body mass index of students from urban and rural residences at an elementary school in Portugal. Methods: The sample covered 270 students, 142 male and 128 female, aged between 9 and 16, from the 5th to the 9th grade. The Fitnessgram test battery (NES, 2002) measured the physical fitness, the body mass index was based on reference values from the World Health Organization (1995) and the students' profiles were assessed through biographical archives provided by the school. Results: The test results only demonstrated significant differences (p<0.05) amongst these students: Females in the 5th and 6th grade in the following tests, trunk extension with better results in students from rural residences and middle strength, with better results in students from urban residences; Males in the 5th and 6th grade in the following tests: the shuttle run with better results in students from rural residences; Females between 7th and 9th grade in the following tests: trunk extension with better results in students from urban residences. Conclusions: Significant differences were not observed between the levels of physical fitness and BMI related to the place of residence (rural and urban).

Źródło:

Journal of Physical Education & Health - Social Perspective; 2018, 7, 11; 23-30
2084-7971

Pojawia się w:

Journal of Physical Education & Health - Social Perspective

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Fringe belt analysis: a method for confirming the establishment of the historical boundaries of Rabat
Analiza fringe belt: metoda potwierdzająca utworzenie historycznych granic Rabatu

Autorzy:

Marques de Sousa Safe, Simone
de Alvarenga Pereira Costa, Staël

Powiązania:

https://bibliotekanauki.pl/articles/650615.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

Morfologia miast
fringe belts
rozwój obszarów miejskich
światowe dziedzictwo UNESCO
Urban morphology
urban evolution
Rabat
UNESCO World Heritage

Opis:

Fringe belt, czyli rozlegle obszary o małej gęstości zabudowy i znacznej ilości przestrzeni otwartych przeznaczonych pod zagospodarowanie instytucjonalne, stanowią ważny morfologiczny element krajobrazu miast. Rabat, stolica Maroka, w 2012 roku został wpisany na listę światowego dziedzictwa UNESCO pod nazwą „Rabat – nowoczesna stolica i historyczne miasto”, jako że reprezentuje model planowania nowoczesnego zintegrowany z historycznym jądrem osadniczym. Niemniej kryterium (v) – przyznawane wybitnym przykładom tradycyjnego osadnictwa, reprezentującego kulturę (lub kultury) lub interakcję człowieka z otoczeniem – zostało uznane za podstawę odrzucenia nominacji Rabatu, który według raportu ICOMOS jest zdefragmentowany przestrzennie i wykazuje brak związku między zabudową a środowiskiem. Mając na uwadze powyższe, artykuł prezentuje Kasbah of Oudayas, unikalną i wyróżniającą się historyczną jednostkę osadniczą, będącą zaprzeczeniem przykładów zaprezentowanych w 2012 roku.Celem opracowania jest zbadanie rozwoju przestrzennego Rabatu w różnych okresach morfologicznych w celu ustalenia, czy fringe belts mogą ujawnić historyczne obszary, w obrębie których miasto ewoluowało w czasie. Artykuł jest także próbą zrozumienia, w jaki sposób fringe belts mogą przyczynić się do uznania Kasbah of Oudayas za pierwsze islamskie jądro osadnicze stolicy. Autorzy wyrażają nadzieję, że niniejsze opracowanie może okazać się pomocne tak dla naukowców, jak i praktyków w dziedzinie morfologii miast i dziedzictwa kulturowego; dostarczyć wskazówki, w jaki sposób badać wyjątkowe historyczne jednostki osadnicze oraz uwyraźnić ich architektoniczne, historyczne i kulturowe wartości; wykazać, w jaki sposób zastosowanie i upowszechnianie wskazanej metodologii może otworzyć nowe perspektywy dla badań z zakresu morfologii miast.
Fringe belts, extensive areas of low density and wide open spaces designated for institutional use, are a morphological element in the urban landscape. Rabat, capital of Morocco, conceived during the French protectorate, received in 2012, a UNESCO World Heritage title for representing a modern urban planning model that integrates an open space system with its historical nucleus. Nonetheless, criterion (v) – to be an outstanding example of a traditional human settlement, which is representative of a culture (or cultures), or human interaction with the environment – was deemed grounds for rejecting Rabat’s nomination because the candidate presented seemed to be fragmented and showed a lack of a relationship between property and environment, according to the ICOMOS report. This study considers the Kasbah of Oudayas to be a unique and outstanding example of a traditional human settlement, in contrast to those cases presented in 2012. The aim of this study is to investigate the evolution of urban Rabat according to the morphological periods of development, in order to, ascertain whether or not the fringe belts can reveal the historic areas in which the city has evolved over time. It also seeks to understand how fringe belts may contribute to confirming the Kasbah of Oudayas as the first Islamic urban nucleus in the capital. As such, it is hoped that the paper may: assist practitioners and academics in the fields of urban morphology and heritage; provide initial insights into how to investigate outstanding traditional human settlements; reveal the architectural, historical and cultural value of such sites; demonstrate how the application and dissemination of a methodology may open new perspectives for studies on the subject.

Źródło:

Acta Universitatis Lodziensis. Folia Geographica Socio-Oeconomica; 2016, 25
1508-1117
2353-4826

Pojawia się w:

Acta Universitatis Lodziensis. Folia Geographica Socio-Oeconomica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

An analysis of anxiety and selected aspects of personality in women with ischemic heart disease according to P.T. Costa and R. R. McCrae theory - The role of psychosocial factors in ischemic heart disease

Autorzy:

Nasiłowska-Barud, A.
Zapolski, T.
Barud, M.
Wysokiński, A.

Powiązania:

https://bibliotekanauki.pl/articles/28762857.pdf

Data publikacji:

2021

Wydawca:

Instytut Medycyny Wsi

Źródło:

Annals of Agricultural and Environmental Medicine; 2021, 28, 1; 107-113
1232-1966

Pojawia się w:

Annals of Agricultural and Environmental Medicine

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Environmental radiological impact by a fertilizer complex in the Ebro river (Spain)
Wpływ przemysłu produkcji nawozów sztucznych na skażenia promieniotwórcze środowiska naturalnego na przykładzie rzeki Ebro (Hiszpania)

Autorzy:

Costa, E.
Sanchez-Cabeza, J.
Garcia, J.
Masque, P.
Grimaltb, J.

Powiązania:

https://bibliotekanauki.pl/articles/340306.pdf

Data publikacji:

2004

Wydawca:

Główny Instytut Górnictwa

Tematy:

skażenie wody
rzeka Ebro w Hiszpanii
skażenie radonem
skażenie torem
water contamination
Ebro river in Spain
radon contamination
thorium contamination

Źródło:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 33-33
1643-7608

Pojawia się w:

Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa

Dostawca treści:

Biblioteka Nauki

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