1,603 research outputs found

    Metodyka nauczania fonetyki języka polskiego (Postulaty ogólne oraz propozycje ćwiczeń fonetycznych dla początkujących i zaawansowanych)

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    Nauczanie języków obcych, a w tym uczenie nie-Polaków języka polskiego, stwarza ustawicznie okazje do zastosowania wiedzy fonetycznej lektora.W pracy z cudzoziemcami teoria i praktyka są tak nierozerwalnie złączone, że brak odpowiedniego wykształcenia w zakresie fonetyki utrudnia, a chwilami uniemożliwia korygowanie błędnej wymowy słuchaczy i objaśnianie przyczyn czy mechanizmów różnych zjawisk fonetycznych: lektor nie przygotowany teoretycznie często nie jest dość wrażliwy na różnice zachodzące między jego wymową a wymową powierzonej mu grupy cudzoziemców, nie dostrzega interferencji obcych zwyczajów językowych na sposoby wymowy polskich wyrazów, ich związków i całych zdań, nie zwraca uwagi na subtelne różnice w wymowie, nawet jeżeli są to różnice systemowe. Stąd postulat: lektor powinien być świadomy tego, czego uczy i co koryguje, a więc do zajęć fonetycznych powinien być dobrze przygotowany teoretycznie.Zadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało dofinansowane ze środków MNiSW w ramach działalności upowszechniającej naukę

    Measurement of CP Violation at the Υ(4S)\Upsilon(4S) without Time Ordering or Δt\Delta t

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    I derive the expressions for the CP-violating asymmetry arising from interference between mixed and direct decays in the Upsilon(4S) system, for the case in which only one of the B decay times is observed, integrating over the decay time of the other B. I observe that neither the difference of the decay times Delta t, nor even their time-ordering, need be detected. A technique for measurement of the CP-violating weak decay parameter sin(2beta) is described which exploits this observation.Comment: 9 pages postscript, also available through http://w4.lns.cornell.edu/public/CLN

    Structural abnormality of the corticospinal tract in major depressive disorder

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    BACKGROUND: Scientists are beginning to document abnormalities in white matter connectivity in major depressive disorder (MDD). Recent developments in diffusion-weighted image analyses, including tractography clustering methods, may yield improved characterization of these white matter abnormalities in MDD. In this study, we acquired diffusion-weighted imaging data from MDD participants and matched healthy controls. We analyzed these data using two tractography clustering methods: automated fiber quantification (AFQ) and the maximum density path (MDP) procedure. We used AFQ to compare fractional anisotropy (FA; an index of water diffusion) in these two groups across major white matter tracts. Subsequently, we used the MDP procedure to compare FA differences in fiber paths related to the abnormalities in major fiber tracts that were identified using AFQ. RESULTS: FA was higher in the bilateral corticospinal tracts (CSTs) in MDD (p’s < 0.002). Secondary analyses using the MDP procedure detected primarily increases in FA in the CST-related fiber paths of the bilateral posterior limbs of the internal capsule, right superior corona radiata, and the left external capsule. CONCLUSIONS: This is the first study to implicate the CST and several related fiber pathways in MDD. These findings suggest important new hypotheses regarding the role of CST abnormalities in MDD, including in relation to explicating CST-related abnormalities to depressive symptoms and RDoC domains and constructs

    Hydrodynamical Theory of Spontaneous Fission with Applications to Mendelevium

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    This thesis will consider in some detail the calculation of some of the quantities considered by the papers reviewed in Chapter I. The objective of the thesis is the prediction of spontaneous-fission half-lives for nuclei with high atomic numbers

    The Colorado Captive Insurance Company Act

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    Geologic history of Martian regolith breccia Northwest Africa 7034: Evidence for hydrothermal activity and lithologic diversity in the Martian crust

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    The timing and mode of deposition for Martian regolith breccia Northwest Africa (NWA) 7034 were determined by combining petrography, shape analysis, and thermochronology. NWA 7034 is composed of igneous, impact, and brecciated clasts within a thermally annealed submicron matrix of pulverized crustal rocks and devitrified impact/volcanic glass. The brecciated clasts are likely lithified portions of Martian regolith with some evidence of past hydrothermal activity. Represented lithologies are primarily ancient crustal materials with crystallization ages as old as 4.4 Ga. One ancient zircon was hosted by an alkali-rich basalt clast, confirming that alkalic volcanism occurred on Mars very early. NWA 7034 is composed of fragmented particles that do not exhibit evidence of having undergone bed load transport by wind or water. The clast size distribution is similar to terrestrial pyroclastic deposits. We infer that the clasts were deposited by atmospheric rainout subsequent to a pyroclastic eruption(s) and/or impact event(s), although the ancient ages of igneous components favor mobilization by impact(s). Despite ancient components, the breccia has undergone a single pervasive thermal event at 500–800°C, evident by groundmass texture and concordance of ~1.5 Ga dates for bulk rock K-Ar, U-Pb in apatite, and U-Pb in metamict zircons. The 1.5 Ga age is likely a thermal event that coincides with rainout/breccia lithification. We infer that the episodic process of regolith lithification dominated sedimentary processes during the Amazonian Epoch. The absence of pre-Amazonian high-temperature metamorphic events recorded in ancient zircons indicates source domains of static southern highland crust punctuated by episodic impact modification

    Geochemistry geochronology and origin of an Archean greenstone-grainite [sic] terrain Wabigoon Subprovince northwestern Ontario

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    "What If. . ."

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    My exhibit titled "What If. . ." is focused on the many questions my sister Lyndsay asks herself everyday. The unknown is one major reason why her anxiety heightens. I captured not only her emotions but those places and situations that cause her anxiety. This disorder has controlled Lyndsay's life to a certain degree for many years now. At the age of 10, she began to experience attacks that began small and grew more intense over time. All of the issues going on in the wold like terrorism, school shootings and constant violence on the news, aid in her feeling anxious. Every stranger she passes, like the man at the train station, to locking herself in the car to keep the outside world at a distance, plays into her fears of What If. When setting up my exhibit I took into consideration her emotions while experiencing anxiety. She has expressed to me that in the moment, she feel out of control, overwhelmed and uncomfortable. I wanted the viewer to experience, even if just for a moment, a sense of what Lyndsay feels. I hung my five main images from the ceiling. Viewers are able to walk around them seeing them from all sides. Having them displayed in an untraditional manner added to the sense of being slightly uncomfortable. The chain materials used to suspend my images were symbolic of the feeling of confinement felt by being controlled by this disorder.Purchase College SUNYPhotographyBachelor of Fine ArtsLutz, Joshua D

    Observation of the Dynamic Beta Effect at CESR with CLEO

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    Using the silicon strip detector of the CLEO experiment operating at the Cornell Electron-positron Storage Ring (CESR), we have observed that the horizontal size of the luminous region decreases in the presence of the beam-beam interaction from what is expected without the beam-beam interaction. The dependence on the bunch current agrees with the prediction of the dynamic beta effect. This is the first direct observation of the effect.Comment: 9 page uuencoded postscript file, postscritp file also available through http://w4.lns.cornell.edu/public/CLNS, submitted to Phys. Rev.

    Study of the Decays B0 --> D(*)+D(*)-

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    The decays B0 --> D*+D*-, B0 --> D*+D- and B0 --> D+D- are studied in 9.7 million Y(4S) --> BBbar decays accumulated with the CLEO detector. We determine Br(B0 --> D*+D*-) = (9.9+4.2-3.3+-1.2)e-4 and limit Br(B0 --> D*+D-) < 6.3e-4 and Br(B0 --> D+D-) < 9.4e-4 at 90% confidence level (CL). We also perform the first angular analysis of the B0 --> D*+D*- decay and determine that the CP-even fraction of the final state is greater than 0.11 at 90% CL. Future measurements of the time dependence of these decays may be useful for the investigation of CP violation in neutral B meson decays.Comment: 21 pages, 5 figures, submitted to Phys. Rev.
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