23,799 research outputs found
Wave turbulence of a rotating array of quantized vortices in the T → 0 temperature limit
No full textThe dynamics of quantized vortices in the zero temperature limit is currently of great interest, particularly in the case of the Fermi superfluid He-B. Here we study wave turbulence, generated by the librating motion of a rotating cylindrical container filled with He-B, in the limit of vanishing viscous forces at temperatures . The polarization of the quantized vortices with respect to the axis of rotation is measured using non-invasive NMR techniques. We observe a decrease of the polarization when the librating motion is started, and a two-stage relaxation process when the modulation of the rotation velocity is stopped. The first relaxation process is associated with the dissipation of large-scale flow stored in inertial waves and the solid body rotation of the vortex array. From the decay of these energy reservoirs we determine the rate of energy dissipation of large-scale flow. The later second process is related to the relaxation of Kelvin waves on individual vortices. This process is monitored by the recovery of the polarization. The existence of a Kelvin wave cascade at the lowest temperatures is currently a central open question. We supply some evidence for the cascade
Design and Analysis of a Distributed TRIC concept Seamless Smart Morphing Wing
No full textThis thesis embarked upon establishing and validating a design process to build and control a distributed TRIC concept seamless smart morphing wing to achieve simultaneous load alleviation, flutter suppression and drag minimization capabilities. A novel aeroelastic simulation tool was built to carry out composite wing skin optimization, with prototype testing carried out to design a flexible connection between modules. The work output was a fully built morphing wing which was successfully tested in the TU Delft Open Jet Facility. Control of the wing was partially made feasible through the development of a surrogate model of the system which was also validated with DIC testing.https://www.youtube.com/watch?v=SdagIiYRWyA&t=1s Smart-X Alpha DemonstratorAerospace Engineerin
Pelevin’s Trinity in the novel “t”: author – protagonist – reader
No full textThe article attempts to interpret Pelevin's artistic strategy in the novel "T" by exploring its subject organization and addressing the key problems of the author, the protagonist, and the reader as they are seen by the researcher. The article analyzes the peculiarities of constructing the narrative reality in the novel "T", and goes on to discuss Pelevin's philosophic models of the development of the humankind, and the emergence of his new anthropology
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Valuation of J&T BANK, a.s.
No full textThe diploma thesis deals with the valuation of J&T BANKA, a.s. The aim of the thesis is to estimate its market price. The thesis is divided into two parts - theoretical and practical. In the theoretical part, the author describes the banking sector, its regulation and risks affecting banks. The practical part is devoted to financial and strategic analysis, preparation of a financial plan and the actual valuation based on two income methods.Diplomová práce se zabývá oceněním J&T BANKY, a.s. Cílem práce je odhadnout její tržní cenu. Práce je rozdělena do dvou částí – teoretická a praktická. V rámci teoretické části autor popisuje bankovní sektor, jeho regulaci a rizika působící na banky. Praktická část se věnuje finanční a strategické analýze, sestavení finančního plánu a samotnému ocenění na základě dvou výnosových metod
Trip account
No full textTrip account - AMs, 15 pp.
“I am attempting to give you some account of a recent vacation trip which we were privileged to enjoy - Rose, Mother and I…” As the account of the trip to view the eclipse is unsigned, we can’t say for sure but as the author states “Rose, Mother and I” one could logically assume that the author is a sibling of T. Rose Curtis
Retail marketing in T-Mobile during the time of digitalization
No full textDiplomová práce se zabývá retail marketingem ve společnosti T-Mobile. V teoretické části autorka nejprve věnovala pozornost retail marketingu jakožto součásti marketingu. Následně jsou vysvětleny pojmy jako je marketingový mix, SWOT analýza, zákaznická cesta, marketingové a komerční komunikace s důrazem na nové technologie a digitální média využívaná v místech prodeje. V praktické části je úvodní kapitola věnována představení společnosti T-Mobile Česká republika (TMCZ) a následující kapitoly se zabývají aplikací retail marketingu v prodejnách TMCZ. Na základě získaných teoretických poznatků je na zkoumanou společnost aplikována SWOT analýza a analýza marketingového mixu. Dále jsou provedeny dva výzkumy, jeden kvantitativní, formou dotazníkového šetření a druhý kvalitativní, pomocí oční kamery. Cílem této diplomové práce je zjistit, jaký mají vliv digitální média využívaná v prodejnách TMCZ na konečné spotřebitele a ověřit optimální rozmístění hlavních komunikačních "touch pointů" na prodejnách. Z vlastního šetření autorky plynou nová doporučení pro oblast retail marketingových aktivit ve společnosti T-Mobile, a to především v oblasti použití digitálních versus tištěných médií na prodejnách a zoptimalizování zákaznické cesty.The diploma thesis deals with a topic of retail marketing which is practically applied to a T-Mobile company. Firstly, in the theoretical part, retail marketing is defined as a part of marketing. Further on, the concepts such as marketing mix, SWOT analysis, customer journey, marketing and commercial communications, new technologies and digital media are explained. In the practical part, the introductory chapter deals with a subscription of the T-Mobile Czech Republic (TMCZ) company. In the subsequent chapters are analyzed retail marketing activities applied in TMCZ stores with a focus on the new technologies used in in-store marketing. On the basis of the acquired theoretical knowledge SWOT analysis and marketing mix analysis are performed. Further on, research is carried out by means of a questionnaire survey and qualitative research using eye tracking camera. The aim of the diploma theses is to investigate the impact of the new media used in TMCZ stores on the customers by means of own field research. Finally, on the basis of the evaluation of the research results, author will propose recommendations for the future retail marketing activities and customer journey optimization in T-Mobile stores
Microbial enrichment culture responsible for the complete oxidative biodegradation of 3‑Amino-1,2,4-triazol-5-one (ATO), the reduced daughter product of the insensitive munitions compound 3‑Nitro-1,2,4-triazol-5-one (NTO)
No full text3-Nitro-1,2,4-triazol-5-one (NTO) is one of the main ingredients of many insensitive munitions, which are being used as replacements for conventional explosives. As its use becomes widespread, more research is needed to assess its environmental fate. Previous studies have shown that NTO is biologically reduced to 3-amino-1,2,4-triazol-5-one (ATO). However, the final degradation products of ATO are still unknown. We have studied the aerobic degradation of ATO by enrichment cultures derived from the soil. After multiple transfers, ATO degradation was monitored in closed bottles through measurements of inorganic carbon and nitrogen species. The results indicate that the members of the enrichment culture utilize ATO as the sole source of carbon and nitrogen. As ATO was mineralized to CO₂, N₂, and NH₄⁺, microbial growth was observed in the culture. Co-substrates addition did not increase the ATO degradation rate. Quantitative polymerase chain reaction analysis revealed that the organisms that enriched using ATO as carbon and nitrogen source were Terrimonas spp., Ramlibacter-related spp., Mesorhizobium spp., Hydrogenophaga spp., Ralstonia spp., Pseudomonas spp., Ectothiorhodospiraceae, and Sphingopyxis. This is the first study to report the complete mineralization of ATO by soil microorganisms, expanding our understanding of natural attenuation and bioremediation of the explosive NTO.Journal ArticleFinal article publishe
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
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