28,933 research outputs found
Linear Operator Inequality and Null Controllability with Vanishing Energy for Unbounded Control Systems
No full textWe consider a linear boundary or point control system on a Hilbert space which is null controllable at some time . To every initial state we associate the minimal ``energy'' needed to transfer to in a time (``energy'' of a control being the square of its norm). Clearly, it decreases with the control time . We shall prove that, under suitable spectral properties of the linear system operator, the minimal energy converges to for $ T\to+\infty
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
Null Subjects in Northeast English
No full textThis paper presents data and analysis relating to null subjects in spoken colloquial English.
While English is not a „pro-drop? language (i.e. subjects must usually be overt), a corpus of
speech collected on Tyneside and Wearside in 2007 shows that null subjects are permitted in
finite clauses in certain contexts. This paper analyses these examples and follow-up
questionnaires, and compares the data with the other types of null subject described in the
literature (pro-drop, topic-drop, early null subjects, aphasics? null subjects and „diary-drop?),
ultimately concluding that the colloquial English phenomenon is most closely related to diary-
drop
W. J. Greenstreet
No full textMy recollections of W. J. Greenstreet date back half a century when we were both undergraduates at Cambridge, but we did not become personally acquainted till many years later. He had a slightly stooping figure and kind protective face which dissolved any feeling of awe produced by his great strength and height, penetrating eyes, and full-grown beard. He had two inseparable friends, E. F. J. Love and G. F. Stout. When in company together they drew the attention of every one who saw them. They looked more like three generations than contemporaries, Greenstreet being plainly the responsible head and Stout the cheerful but inscrutable infant, while Love appeared to be more normal and rather embarrassed by the strangeness of his companions.</jats:p
On the Analytic Solutions of the Functional Equations w 1 f(a 1 z) + w 2 f(a 2 z) + ... + w n f(a n z) = 0
No full textIn this paper, it is showed that, given an integer number n ≥ 2, each zero of an exponential polynomial of the form w1az1+w2az2+⋯+wnazn, with non-null complex numbers w 1,w 2,…,w n and a 1,a 2,…,a n , produces analytic solutions of the functional equation w 1 f(a 1 z) + w 2 f(a 2 z) + ... + w n f(a n z) = 0 on certain domains of C, which represents an extension of some existing results in the literature on this functional equation for the case of positive coefficients a j and w j
Partial Functional Rescue of Helicoverpa armigera Single Nucleocapsid Nucleopolyhedrovirus Infectivity by Replacement of F Protein with GP64 from Autographa californica Multicapsid Nucleopolyhedrovirus
No full textTwo distinct envelope fusion proteins (EFPs) (GP64 and F) have been identified in members of the Baculoviridae family of viruses. F proteins are found in group II nucleopolyhedroviruses (NPVs) of alphabaculoviruses and in beta- and deltabaculoviruses, while GP64 occurs only in group I NPVs of alphabaculoviruses. It was proposed that an ancestral baculovirus acquired the gp64 gene that conferred a selective advantage and allowed it to evolve into group I NPVs. The F protein is a functional analogue of GP64, as evidenced from the rescue of gp64-null Autographa californica multicapsid nucleopolyhedrovirus (MNPV) (AcMNPV) by F proteins from group II NPVs or from betabaculoviruses. However, GP64 failed to rescue an F-null Spodoptera exigua MNPV (SeMNPV) (group II NPV). Here, we report the successful generation of an infectious gp64-rescued group II NPV of Helicoverpa armigera (vHaBac Delta F-gp64). Viral growth curve assays and quantitative real-time PCR (Q-PCR), however, showed substantially decreased infectivity of vHaBac Delta F-gp64 compared to the HaF rescue control virus vHaBac Delta F-HaF. Electron microscopy further showed that most vHaBac Delta F-gp64 budded viruses (BV) in the cell culture supernatant lacked envelope components and contained morphologically aberrant nucleocapsids, suggesting the improper BV envelopment or budding of vHaBac Delta F-gp64. Bioassays using pseudotyped viruses with a reintroduced polyhedrin gene showed that GP64-pseudotyped Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus (HearNPV) significantly delayed the mortality of infected H. armigera larvae
The appearance, motion, and disappearance of three-dimensional magnetic null points
No full textN.A.M. acknowledges support from NASA grants NNX11AB61G, NNX12AB25G, and NNX15AF43G; NASA contract NNM07AB07C; and NSF SHINE grants AGS-1156076 and AGS-1358342 to SAO. C.E.P. acknowledges support from the St Andrews 2013 STFC Consolidated grant.While theoretical models and simulations of magnetic reconnection often assume symmetry such that the magnetic null point when present is co-located with a flow stagnation point, the introduction of asymmetry typically leads to non-ideal flows across the null point. To understand this behavior, we present exact expressions for the motion of three-dimensional linear null points. The most general expression shows that linear null points move in the direction along which the magnetic field and its time derivative are antiparallel. Null point motion in resistive magnetohydrodynamics results from advection by the bulk plasma flow and resistive diffusion of the magnetic field, which allows non-ideal flows across topological boundaries. Null point motion is described intrinsically by parameters evaluated locally; however, global dynamics help set the local conditions at the null point. During a bifurcation of a degenerate null point into a null-null pair or the reverse, the instantaneous velocity of separation or convergence of the null-null pair will typically be infinite along the null space of the Jacobian matrix of the magnetic field, but with finite components in the directions orthogonal to the null space. Not all bifurcating null-null pairs are connected by a separator. Furthermore, except under special circumstances, there will not exist a straight line separator connecting a bifurcating null-null pair. The motion of separators cannot be described using solely local parameters because the identification of a particular field line as a separator may change as a result of non-ideal behavior elsewhere along the field line.Peer reviewe
Publication Bias Against Null Results
No full textStudies suggest a bias against the publication of null (p > .05) results. Instead of significance, we advocate reporting effect sizes and confidence intervals, and using replication studies. If statistical tests are used, power tests should accompany them.publication, bias, null results
MHD wave propagation in the neighbourhood of a two-dimensional null point
No full textThe nature of fast magnetoacoustic and Alfvén waves is investigated in a zero β plasma. This gives an indication of wave propagation in the low β solar corona. It is found that for a two-dimensional null point, the fast wave is attracted to that point and the front of the wave slows down as it approaches the null point, causing the current density to accumulate there and rise rapidly. Ohmic dissipation will extract the energy in the wave at this point. This illustrates that null points play an important role in the rapid dissipation of fast magnetoacoustic waves and suggests the location where wave heating will occur in the corona. The Alfvén wave behaves in a different manner in that the wave energy is dissipated along the separatrices. For Alfvén waves that are decoupled from fast waves, the value of the plasma β is unimportant. However, the phenomenon of dissipating the majority of the wave energy at a specific place is a feature of both wave types
Rodzina chrześcijańska w „kulturze prowizoryczności”
No full textContemporary culture can be described as provisional and temporary. A provisional culture is closely bound with such ideologies as secularism, individualism, relativism, practical materialism, hedonism and consumerism. These dominant cultural paradigms threaten the Christian understanding of family, hindering its comprehensive development and its ability to fulfil its basic objectives such as mutual welfare of the spouses or giving birth to and raising offspring. A provisional culture poses a threat and a great challenge for the family. Taking into account the fact that each culture is an expression of the human spirit and an environment for building identity and interpersonal relations, a Christian family must not ignore the problems of the contemporary world, but rather undertake a dialogue with a provisional culture aimed at presenting and promoting the Christian model of family, being the first school of faith, preaching and defending a culture of life.Współczesną kulturę można określić mianem prowizorycznej lub tymczasowej. Kultura prowizoryczności ściśle łączy się z prądami ideowymi: sekularyzmem, indywidualizmem, relatywizmem, materializmem praktycznym, hedonizmem i konsumpcjonizmem. Zarysowane dominanty kulturowe godzą w chrześcijańskie rozumienie rodziny, uniemożliwiając jej wszechstronny rozwój i realizację podstawowych celów, jakimi są wzajemne dobro małżonków oraz zrodzenie i wychowanie potomstwa. Kultura prowizoryczności zagraża rodzinie i stanowi dla niej wielkie wyzwanie. W związku z tym, że każda kultura jest wyrazem ludzkiego ducha i środowiskiem budowania tożsamości i relacji międzyludzkich, rodzina chrześcijańska nie może zamknąć się na problemy współczesności, lecz powinna podjąć z kulturą prowizoryczności pewną formę dialogu, którego wyznacznikami są następujące zadania: ukazywać i promować chrześcijański model rodziny, być pierwszą szkołą wiary, głosić i bronić kultury życia.ks. PAWEŁ RABCZYŃSKI – ksiądz Archidiecezji Warmińskiej, absolwent KUL Jana Pawła II, stypendysta Rządu Republiki Francuskiej (staż naukowy w Instytucie Katolickim w Paryżu), rektor Wyższego Seminarium Duchownego Metropolii Warmińskiej „Hosianum” w Olsztynie (2011-2017), adiunkt w Katedrze Teologii Dogmatycznej i FundamentalnejUniwersytetu Warmińsko-Mazurskiego w Olsztynie; zainteresowania naukowe koncentrują się na chrystologii, eklezjologii i ekumenizmie oraz teologii powołania i rodziny.Uniwersytet Warmińsko-Mazurski w OlsztynieAparecida, V Ogólna Konferencja Episkopatów Ameryki Łacińskiej i Karaibów [The Fifth General Conference Of The Bishops Of Latin America And The Caribbean], Dokument Końcowy, Jesteśmy uczniamii misjonarzami Jezusa Chrystusa, aby nasze narody miały w Nim życie, Gubin 2014.Benedict XVI, List apostolski Porta fidei [Apostolic letter Porta fidei] (11.10.2011).Benedict XVI, Posynodalna adhortacja apostolska Sacramentum caritatis [Post-Synodal Apostolic Exhortation Sacramentum caritatis] (22.02.2007).Benedict XVI, Przemówienie podczas Sesji Inauguracyjnej V Ogólną Konferencję Episkopatów Ameryki Łacińskiej i Karaibów [Address Of His Holiness Benedict XVI at The Fifth General Conference Of The Bishops Of Latin America And The Caribbean] (Aparecida, 13.05.2007), in: Aparecida, V Ogólna Konferencja Episkopatów Ameryki Łacińskiej i Karaibów [The Fifth General Conference Of The Bishops Of Latin America And The Caribbean], Dokument Końcowy, Jesteśmy uczniami i misjonarzami Jezusa Chrystusa, aby nasze narody miały w Nim życie, Gubin 2014, p. 292-311.Bronk A., Zrozumieć świat współczesny, Lublin 1998.Dulles A., Wkład chrześcijaństwa w kulturę: Perspektywa amerykańska [The Contribution of Christianity to Culture: An American Perspective], in: Chrześcijaństwo jutra. Materiały II Międzynarodowego Kongresu Teologii Fundamentalnej, Lublin, 18-21.09.2001, ed. M. Rusecki et al, Lublin 2001, p. 149-177.Dyczewski L., Rodzina. Społeczeństwo. Państwo, Lublin 1994.Dziura M., Kultura konsumpcji, „Roczniki Wydziału Nauk Prawnych i Ekonomicznych KUL”, t. V-VI, z. 2, 2009-2010, p. 271-286.Francis, Encyklika Lumen fidei [Encyclical Letter Lumen fidei] (29.06.2013).Francis, Katecheza 28. Rodzina uratuje świat (Watykan, 16.09.2015) [Catechesis 28: The family spirit (Vatican, 16.09.2015)], in: Franciszek, Rodzina uratuje świat, Gliwice 2016, p. 137-140.Francis, Odpowiedzi na zadane pytania podczas spotkania z Konferencją Episkopatu Polski, Katedra na Wawelu, 27.07.2016 [Meeting With The Polish Bishops, Cathedral Of Kraków], in: Franciszek, Między kanapą a odwagą, Kraków 2016, p. 39-65.Francis, Posynodalna adhortacja apostolska Amoris laetitia [The Apostolic Exhortation Amoris Laetitia] (19.03.2016).Francis, Przemówienie do uczestników sesji plenarnej Kongregacji ds. Instytutów Życia Konsekrowanego i Stowarzyszeń Życia Apostolskiego (Watykan, 28.01.2017) [Address Of His Holiness Pope Francis To Participants In The Plenary Assembly Of The Congregation For Institutes Of Consecrated Life And Societies Of Apostolic Life (Vatican, 28.01.2017)], „L’Osservatore Romano”,Polish ed., 2 (390), 2017, p. 14-...Francis, Przemówienie podczas spotkania z chorymi dziećmi i ich rodzicami, Uniwersytecki Szpital Dziecięcy w Prokocimiu, 29.07.2016 [Visit To The Children’s University Hospital, Address Of The Holy Father, Prokocim, Kraków], in: Franciszek, Między kanapą a odwagą, Kraków 2016, p. 104-106.Francis, Przemówienie w czasie spotkania z władzami państwowymi i korpusem dyplomatycznym, Zamek Królewski na Wawelu, 27.07.2016 [Meeting With The Authorities, The Civil Society And The Diplomatic Corps, Address Of His Holiness Pope Francis, Kraków, Courtyard Of Wawel Castle], in: Franciszek, Między kanapą a odwagą, Kraków 2016, p. 31-38.John Paul II, Adhortacja apostolska Familiaris consortio [Apostolic exhortation Familiaris consortio] (22.11.1981).John Paul II, Encyklika Evangelium vitae [Encyclical Evangelium vitae] (25.03.1995).John Paul II, Przemówienie wygłoszone w siedzibie UNESCO (Paryż, 2.06.1980) [Address to UNESCO (Paris, 2.06.1980)].Karta Praw Rodziny [Charter of the Rights of the Family]. Issued by Komisja Duszpasterstwa Rodzin. Pelplin [b. d. w.].Kowalczyk S., Filozofia kultury. Próba personalistycznego ujęcia problematyki. Lublin 1996.Malcher G., Wychowanie do miłości – rodzina szkołą miłości, in: Wychowanie w rodzinie chrześcijańskiej, ed. F. Adamski, Kraków 1984, p. 306-323.McCarthy C., Giardina M. D., Harewood S. J., Park J. K., Contesting Culture: Identity and Curriculum Dilemmas in the Age of Globalization, Postcolonialism, and Multiplicity, “Harvard Educational Review” no. 73, 2003, p. 449-465.Melosik Z., Modernizm i postmodernizm we współczesnym dyskursie humanistycznym: konfrontacje i kontrowersje, in: Pedagogika jako formacja intelektualna refleksji we współczesnym dyskursie humanistycznym, ed. J. Gnitecki, Poznań 2005, p. 21-50.Michalski J., Edukacja religijna a epoka ponowoczesna, „Pedagogia Christiana” no. 1 (21), 2008, p. 229-240.Müller G. L., Ubóstwo, Lublin 2014.Pałyga J., Rodzice wobec kryzysu wiary swoich dzieci, in: Wychowanie w rodzinie chrześcijańskiej, ed. F. Adamski, Kraków 1984, p. 218-250.Paul VI, Adhortacja apostolska Evangelii nuntiandi [The Apostolic Exhortation Evangelii nuntiandi](8.12.1975).Peeters M. A., The globalization of the western cultural revolution. Key concepts, operational mechanisms, Brussels 2007.Poupard P., Ten papież jest darem od Boga. Rozmowa z M.-J. Guillaume [Ce Pape est un don de Dieu; Entretiens avec Marie-Joëlle Guillaume], Katowice 2002.Smoleński S., Wychowanie w rodzinie jako przygotowanie do odpowiedzialnego podjęcia powołania chrześcijańskiego, in: Wychowanie w rodzinie chrześcijańskiej, ed. F. Adamski, Kraków 1984, p. 69-85.Wistuba H., Wychowanie religijne małego dziecka w rodzinie, in: Wychowanie w rodzinie chrześcijańskiej, ed. F. Adamski, Kraków 1984, p. 200-217.Wychowanie w rodzinie chrześcijańskiej, ed. F. Adamski, Kraków 1984.16/313314
- …
