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    Wyświetlanie 1-14 z 14
    Tytuł:
    Magnesium biodegradable implants coated with polylactic acid
    Autorzy:
    Munoz, M.
    Rams, J.
    Lopez, A.
    Matykina, E.
    Torres, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/284077.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
    Tematy:
    implants
    biodegradation
    magnesium alloys
    Źródło:
    Engineering of Biomaterials; 2017, 20, no. 143 spec. iss.; 28
    1429-7248
    Pojawia się w:
    Engineering of Biomaterials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Association between coal and firewood combustion and hospital admissions and mortality in Chile 2015 - an ecological approach
    Autorzy:
    Paredes, M.C.
    Munoz, M.P.
    Salgado, M.V.
    Maldonado, A.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085865.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    air pollution
    biomass
    mortality
    hospitalization rate
    Opis:
    Introduction and objective. Burning coal and firewood generates toxic emissions that are associated with respiratory illness, cardiovascular disease, and even death. The aim of the study is to evaluate the association between county-level prevalence of household coal and firewood use and health outcomes, including total, respiratory, and cardiovascular mortality, as well as total and respiratory hospitalization rates. Materials and method. The ecological study included data on the use of household coal and firewood in 139 counties obtained from the 2015 Chilean National Socio-economic Characterization Survey. Total, respiratory, and cardiovascular mortality, as well as total and respiratory hospitalization rates, were obtained from the Department of Health Statistics. Poisson models with robust error variance, Pearson linear correlation coefficients, and scatterplots were used to explore associations between household coal and firewood use and morbidity-mortality, stratifying by geographic zone. Results. Total, respiratory, and cardiovascular mortality and total and respiratory hospitalization rates were 5.7 per 1,000, 552 per 100,000, 157 per 100,000, 92.5 per 1000, and 8.8 per 1000 inhabitants, respectively. The median prevalence of coal use for residential cooking, heating, or water heating was 3.64%, while the median prevalence of firewood combustion was 12%. In southern counties, age- and gender-adjusted respiratory mortality increased 2.02 (95% CI: 1.17–3.50), 1.5 (95% CI: 1.11–1.89), and 1.76-fold (95% CI: 1.19–2.60) for each percentage increase in household coal and firewood use for heating, cooking and heating water, respectively. Conclusions. The prevalence of household coal and firewood used for heating and cooking was positively correlated with respiratory mortality and hospitalization in southern zone counties.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 418-426
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure Refinement of the Semiconducting Compound $Cu_3TaS_4$ from X-Ray Powder Diffraction Data
    Autorzy:
    Delgado, G.
    Contreras, J.
    Mora, A.
    Durán, S.
    Muñoz, M.
    Grima-Gallardo, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1493612.pdf
    Data publikacji:
    2011-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.50.Nw
    61.66.Fn
    Opis:
    The ternary compound $Cu_{3}TaS_{4}$ has been investigated by means of X-ray powder diffraction and its structure has been refined by the Rietveld method. This compound is isostructural with the sulvanite mineral $Cu_{3}VS_{4}$, and crystallizes in the cubic $P \bar{4} 3m$ space group (No. 215), Z = 1, with unit cell parameters a = 5.5145(1) Å and V = 167.70(1) $Å^{3}$. The refinement of 14 instrumental and structural parameters converged to $R_{p}$ = 4.4%, $R_{wp}$ = 6.8%, $R_{exp}$ = 5.5% and S = 1.2 for 4501 step intensities and 33 independent reflections.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 3; 468-472
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Is prenatal arsenic exposure associated with salivary cortisol in infants in Arica, Chile? An exploratory cohort study
    Autorzy:
    Salgado, M.A.V.
    Schisterman, E.
    Pino, P.
    Bangdiwala, S.
    Munoz, M.P.
    Iglesias, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2083226.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    environmental exposure
    arsenic
    pregnant women
    cohort study
    Chile
    Opis:
    Introduction. In animal models, gestational exposure to inorganic arsenic has been associated with higher corticosterone concentration and consequent impairment of stress control in offspring. An equivalent association relating cortisol, a glucocorticoid hormone, in humans has not been previously studied. Objective. The aim of the study was to explore the association between prenatal inorganic arsenic exposure and salivary cortisol in infants from Arica, Chile. Materials and method. A cohort study of 168 mother-child dyads was recruited. In the 2nd trimester of pregnancy, urinary inorganic arsenic was assessed; 18–24 months after delivery, salivary cortisol was measured in the children. Maternal cortisol, maternal depression, stress, and socio-economic status were also evaluated. Results. The adjusted association was estimated with multiple linear regression after evaluating confounding through a directed acyclic graph. Median urinary inorganic arsenic in pregnant women was 14.1 μg/L (IQR: 10.4–21.7) while salivary cortisol in the children was 0.17 μg/L (IQR: 0.11–0.38). Among children from the highest income families (> 614 USD/month), arsenic exposure was associated with salivary cortisol. Children in the third quartile of arsenic exposure had -0.769 units of the logarithm of salivary cortiso, compared with those in the first quartile (p = 0.045). Conclusions. In this sample, prenatal exposure to arsenic was associated with salivary cortisol (third quartile of inorganic arsenic), only in infants belonging the highest income strata (> 614 USD). More studies are needed to confirm these preliminary results.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2019, 26, 2; 266-272
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New association between Amblyomma parvitarsum (Acari: Ixodidae) and the endemic lizard Liolaemus eleodori (Iguania: Liolaemidae) in Argentina
    Autorzy:
    Castillo, G.N.
    Acosta, J.C.
    Rodríguez-Munoz, M.
    Martínez, T.
    Gonzalez-Rivas, C.
    Nava, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/5570.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Źródło:
    Annals of Parasitology; 2019, 65, 1
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Average nutrient and chlorophyll distributions in the Western Mediterranean: RADMED project
    Autorzy:
    Garcia-Martinez, M.C.
    Vargaz-Yanez, M.
    Moya, F.
    Santiago, R.
    Munoz, M.
    Reul, A.
    Ramirez, T.
    Balbin, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48926.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    climate change
    water column
    nutrient concentration
    nutrient transport
    chlorophyll
    Mediterranean Sea
    RADMED project
    Źródło:
    Oceanologia; 2019, 61, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A grouping of the Sustainable Development Goals (SDGs) and their influence on business results: An analysis for Spanish companies
    Autorzy:
    Peña, Isidro
    Andrade, Silvia M.
    Muñoz, Rosa M.
    Martínez, Isabel
    Powiązania:
    https://bibliotekanauki.pl/articles/19322782.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Badań Gospodarczych
    Tematy:
    SDGs
    sustainability
    business results
    Spanish companies
    Opis:
    Research background: In 2015, the United Nations (UN) set the 2030 Agenda for Sustainable Development and established 17 Sustainable Development Goals (SDGs) containing the social, economic, and environmental pillars of sustainable development. These focus on governments, society, non-profit organisations, and the private sector. This last pillar plays a key role in the pursuit of these goals, but there remains a lack of knowledge regarding how companies achieve the SDGs. Purpose of the article: Some authors have analysed the effect of companies' adoption of the SDGs on their business performance. However, there is a gap in the analysis of this influence when considering the groups of SDGs. This study examines the level of commitment of a sample of Spanish companies with a grouping of the SDGs and their effects on business results. Methods: We obtained information on companies from the UNGC and developed a panel regression. Findings & value added: We concluded that all the SDGs do not have the same effect on companies that incorporate them into their activities. Although it is possible to make progress in all the SDGs, complementarities and trade-offs influence companies' results. The results obtained in this study incorporate new ideas into this issue and provide a new vision of how companies should incorporate sustainability into their businesses. It is not a question of achieving as many sustainable development goals as possible, but rather of focusing on those that can contribute the most to improving business performance. The clustering of the SDGs that we have undertaken and their subsequent analysis facilitates this work.
    Źródło:
    Oeconomia Copernicana; 2023, 14, 2; 551-583
    2083-1277
    Pojawia się w:
    Oeconomia Copernicana
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nutritional and antioxidant profile of the Physalis fruit grown in three Andean regions of Peru
    Autorzy:
    Obregón-La Rosa, A.J.
    Contreras-López, E.
    Juárez, E.F.
    Barrón, U.G.
    Muñoz, A.M.
    Ramos-Escudero, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/28765541.pdf
    Data publikacji:
    2023
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Opis:
    Background. Physalis peruviana L. fruit contains nutritional and bioactive compounds of immense importance to public health and represents a potential ingredient for the development of functional foods and beverages. Objective. This study aimed to determine the chemical and nutritional composition as well as the antioxidant capacity of the P. peruviana L. fruit grown in Peru in three areas of the Central Andean region. Material and methods. Proximal and physicochemical analyses and estimation of mineral content, vitamin C, total carotenoids, total polyphenols, and antioxidant capacity (2, 2-diphenyl-1-picrylhydrazyl [DPPH] and 2, 2′-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) [ABTS] assays) were performed using standardized methods. Results. The fruits were collected from three regions of the Peruvian Andes (Ancash, Cajamarca, and Cusco). The results showed that the content of potassium (306.54–327.60 mg/100 g) and iron (12.93–14.47 mg/kg) was prominent. The Physalis fruit had high levels of vitamin C (47.20–52.20 mg/100 g), total polyphenols (68.17–83.40 mg equivalents of gallic acid/100 g), and carotenoids (1.12–1.73 mg β-carotene/100 g). Higher values for antioxidant capacity were obtained with the ABTS method (896–1003.33 μmol Trolox/100 g) than with the DPPH method (290–309 μmol Trolox/100 g). Conclusions. This study confirms that the P. peruviana fruit has properties that could provide important health benefits and that it could be used for the development of functional foods and food supplement.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2023, 74, 1; 49-57
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gestational length in Carthusian broodmares: effect of breeding season, foal gender, age of mare, year of parturition, parity and sire
    Autorzy:
    Satue, K.
    Felipe, M.
    Mota, J.
    Munoz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/31208.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gestational length
    broodmare
    breeding season
    foal gender
    foal sex
    animal age
    age
    mare
    parturition
    parity
    sire
    Carthusian horse
    Opis:
    The length of gestation in Carthusian broodmares was calculated on the basis of 339 spontaneous full-term deliveries taking place in the 8-year period 1998-2005 from 158 broodmares and 29 stallions in a major farm of Spanish horses of Carthusian strain in southern Spain. Ultrasonography was used to determine follicular dehiscence, 1st day of pregnancy and to confirm conception in mares. Mean GL was 332.4 ± 12.1 days, and a normal interval of 297-358 days was established for this breed. GL records were grouped on the basis of foal sex (colts or fillies), mating month (between November and January; February and April; May and July), age of the mare (4 to 7 years; 8 to 12 years; 13 to 17 years), breeding year, stallion and parity (primiparous vs. multiparous). GLs were 12.9 days shorter in mares mated between May and July than those mated between November and January and 15.3 days in mares mated between February and April (p<0.001). Mares aged between 8-12 years had 5.3 days shorter GLs than those aged between 13-17 years (p<0.05). Pregnancy was significantly 5.7 days longer when the mare gave birth to colts than fillies (p<0.05). GL was 14.5 days longer in primiparous than in multiparous mares (p<0.001). No statistical differences in GL were found between the studied years. This study shows the influence of certain stallion on GL.
    Źródło:
    Polish Journal of Veterinary Sciences; 2011, 14, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An efficient implementation of boundary conditions in an ALE model for orthogonal cutting
    Efektywne sformułowanie warunków brzegowych w modelowaniu procesu skrawania we współrzędnych Lagrange-Eulera (ALE)
    Autorzy:
    Miguelez, M. H.
    Munoz-Sanchez, A.
    Cantero, J. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/279416.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    residual stresses
    orthogonal machining
    ALE
    boundary conditions
    Opis:
    Prediction of machining-induced residual stresses is an interesting objective in the field of modelling manufacturing processes. Although Finite Element Analysis (FEA) has been widely used for this purpose, many problems are found when the numerical model is developed. Computational cost and numerical problems related to the extreme mesh distortion make the effort of finite element modelling of machining extremely time consuming. The aim of this work is to predict machinning-induced residual stresses using a finite element model based in ALE (Arbitrary Lagrangian Eulerian) approach. The finite element general-purpose code ABAQUS is used, modifying the previous model used in scientific literature to predict residual stresses. Boundary conditions in the entrance of the workpiece and in the upper border of the chip were modified from Lagrangian boundaries in the previous model, to Eulerian boundaries in the new model. Main advantages of the model presented in this work are low level of distortion of the mesh, the possibility of simulate long length of machined surface and time-efficiency. The model has been applied to calculate residual stresses in AISI 316L during machining. Reasonable agreement with experimental results has been found.
    Przewidywanie szczątkowych naprężeń wywoływanych obróbką skrawaniemw materiale próbki stanowi interesujące zagadnienie modelowania tego typu technologii wytwarzania. Mimo, że analiza oparta na elementach skończonych znalazła szerokie zastosowanie w tej dziedzinie, jej skuteczność jest problematyczna na poziomie budowy modelu numerycznego. Koszt symulacji i kłopoty obliczeniowe związane z ogromnym zniekształceniem siatki elementów skończonych czynią ten rodzaj analizy wyjątkowo czasochłonnym. Celem tej pracy jest opis metody określania naprężeń szczątko- wych indukowanych obróbką skrawaniem za pomocą modelu z elementami skończonymi w opisie eulerowsko-lagrange'owskim ALE (ang. Arbitrary Lagrangian Eulerian). W obliczeniach zastosowano wielozadaniowy pakiet ABAQUS, który pozwolił na modyfikację dotychczas stosowanego modelu, opisanego w literaturze. Warunki brzegowe w obszarze wejścia noża w obrabiany materiał i górnej strefie wióra zmodyfikowano z typu Lagrange'a na Eulera w nowej wersji. Zaletą tego rozwiązania okazało się małe zniekształcenie siatki elementów skończonych, możliwość symulacji długich powierzchni obróbczych i znacznie krótszy czas obliczeń. Model wykorzystano do określenia naprężeń szczątkowych w stali AISI 316L podczas skrawania. Potwierdzono satysfakcjonującą zgodność symulacji z wynikami pomiarów doświadczalnych.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2009, 47, 3; 599-616
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experiments performed with bubbly flow in vertical pipes at different flow conditions covering the transition region : simulation by coupling Eulerian, Lagrangian and 3D random walks models
    Autorzy:
    Munoz-Cobo, J.
    Chiva, S.
    Essa, M.
    Mendes, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/240773.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    grafy eulerowskie
    grafy hamiltonowski
    obszary międzyfazowe
    pomiar
    przepływy pęcherzykowe
    stężenie
    Bubbly .ow measurements
    Eulerian and Lagrangian models
    Interfacial area concentration
    Opis:
    Two phase flow experiments with different superficial velocities of gas and water were performed in a vertical upward isothermal co-current air-water flow column with conditions ranging from bubbly flow, with very low void fraction, to transition flow with some cap and slug bubbles and void fractions around 25%. The superficial velocities of the liquid and the gas phases were varied from 0.5 to 3 m/s and from 0 to 0.6 m/s, respectively. Also to check the effect of changing the surface tension on the previous experiments small amounts of 1-butanol were added to the water. These amounts range from 9 to 75 ppm and change the surface tension. This study is interesting because in real cases the surface tension of the water diminishes with temperature, and with this kind of experiments we can study indirectly the effect of changing the temperature on the void fraction distribution. The following axial and radial distributions were measured in all these experiments: void fraction, interfacial area concentration, interfacial velocity, Sauter mean diameter and turbulence intensity. The range of values of the gas superficial velocities in these experiments covered the range from bubbly flow to the transition to cap/slug flow. Also with transition flow conditions we distinguish two groups of bubbles in the experiments, the small spherical bubbles and the cap/slug bubbles. Special interest was devoted to the transition region from bubbly to cap/slug flow; the goal was to understand the physical phenomena that take place during this transition A set of numerical simulations of some of these experiments for bubbly flow conditions has been performed by coupling a Lagrangian code, that tracks the three dimensional motion of the individual bubbles in cylindrical coordinates inside the field of the carrier liquid, to an Eulerian model that computes the magnitudes of continuous phase and to a 3D random walk model that takes on account the fluctuation in the velocity field of the carrier fluid that are seen by the bubbles due to turbulence fluctuations. Also we have included in the model the deformation that suffers the bubble when it touches the wall and it is compressed by the forces that pushes it toward the wall, provoking that the bubble rebound like a ball.
    Źródło:
    Archives of Thermodynamics; 2012, 33, 1; 3-39
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Posterior reversible encephalopathy syndrome – Case report
    Autorzy:
    Kulczynski, M.
    Kuroska, G.
    Sapko, K.
    Marciniec, M.
    Munoz-Niklitschek, E.
    Dyndor, P.
    Dyndor, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2098209.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    oedema
    posterior reversible encephalopathy syndrome
    seizure
    nausea
    neurological deficit
    ischaemia
    magnetic resonance imaging
    Opis:
    Introduction. Posterior reversible encephalopathy syndrome (PRES) is a group of clinical disorders typically manifested by the presence of seizures, headache, impaired consciousness, nausea and focal neurological deficits. It is stated that PRES is a result of high blood pressure which leads to impaired self-regulation and hyperperfusion causing endothelial damage and vasogenic oedema or that excessive arteriolar vasoconstriction causes reduced blood flow, thus causing ischemia and cytotoxic oedema. Case Report. A 21-year-old woman was admitted to obstetrics & gynaecology department with symptoms of eclampsia. CT of the head revelaed a holohemispheric watershed pattern. MRI confirmed the presence of vasogenicoedema in the affected regions, typical for PRES. C-section was performed. Ten days after administering treatment, MRI showed complete withdrawal of the lesions. The diagnosis of PRES was based on clinical symptoms and MRI, with typical cortical and subcortical oedema without infarction.
    Źródło:
    Journal of Pre-Clinical and Clinical Research; 2020, 14, 4; 123-125
    1898-2395
    Pojawia się w:
    Journal of Pre-Clinical and Clinical Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simultaneous measurement of evaporating fuel spray using laser induced exciplex fluorescence
    Autorzy:
    Martine--Martínez, S.
    Sánchez-Cruz, F. A
    Rodríguez-Morales, G.
    Riesco-Ávila, J. M.
    Gallegos-Munoz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/243044.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    thermal engine
    direct injection
    liquid phase
    vapour phase
    penetration length
    Opis:
    A macroscopic analysis of experimental measurements offuel sprays penetration on evaporating conditions using the Laser Induced Fluorescence Planar technique is presented. A pure fuel and tracers have been used to determine the two-phase process of the spray by characterizing the wavelengths they display when excited by a laser beam. An experimental set-up based on a single cylinder engine [1, 2], an Nd:YAG laser, an image acquisition system and a system of injection common rail have been used to carry out the experimental processes. Experimental results show the behaviour of the vapour phase and liquid phase in the spray under different thermodynamic conditions and injection parameters in the combustion chamber, particularly the work-fluid density and the injection pressure were observed. The measurement of these parameters is of interest to design the combustion chamber geometry and the piston bowl features of modern direct injection Diesel engines. In particularly, the sschematic diagram and main components of the equipment, cross-sectional view of the cylinder head, experimental layout of PLIEF imaging tests and images, examples of the liquid phase and vapour phase penetration, maximum penetration of the liquid and vapour phase as function of the work fluid density, Maximum penetration of the phase as function of the work fluid density, maximum penetration of the liquid and vapour phase as function of the injection pressure are presented in the paper.
    Źródło:
    Journal of KONES; 2007, 14, 2; 315-326
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computationally-Efficient Design of a Dynamic System-Level LTE Simulator
    Autorzy:
    Munoz, P.
    Bandera, I. de la
    Ruiz, F.
    Luna-Ramirez, S.
    Barco, R.
    Toril, M.
    Lázaro, P.
    Rodriguez, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/226262.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    LTE
    simulator
    RRM
    network
    link-level
    system-level
    E-UTRAN
    Opis:
    The Long-Term Evolution (LTE) is the next generation of current mobile telecommunication networks. LTE has a new flat radio-network architecture and a significant increase in spectrum efficiency. In this paper, a computationally-efficient tool for dynamic system-level LTE simulations is proposed. A physical layer abstraction is performed to predict link-layer performance with a low computational cost. At link layer, there are two important functions designed to increase the network capacity: Link Adaptation and Dynamic Scheduling. Other Radio Resource Management functionalities such as Admission Control and Mobility Management are performed at network layer. The simulator is conceived for large simulated network time to allow evaluation of optimization algorithms for the main network-level functionalities.
    Źródło:
    International Journal of Electronics and Telecommunications; 2011, 57, 3; 347-358
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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