We investigate chemical abundance variations along the sightlines through 13 damped Lyα systems (DLA). We introduce a technique designed to identify abundance variations in multiple velocity bins along the sightlines and perform a series of Monte-Carlo simulations to derive quantitative limits and values. The majority of these DLA have very uniform relative abundances: 95% c.l. upper limits of ...

The paper is concerned with the recognition of faces at application of different methods of global feature generation. We check the selected choice of transformations of images, leading to the numerical representation of the face image. The investigated approaches include the linear and nonlinear methods of transformation: principal component analysis (PCA), Kernel PCA, Fisher linear discrimina...

1. Wstęp. Nieliniowa regulacja predykcyjna (NMPC – Nonlinear Model Predictive Control) jest metodą sterowania polegającą na cyklicznym rozwiązywaniu zadania sterowania otwartego (OCP – Open Control Problem zob. [6]). Początkową część wyliczonego w ten sposób sterowania stosuje się przez pewien czas δ, po czym wyznacza się stan obiektu i powtarza całą procedurę dla nowego warunku początkowego. Z...

W siedzibie Rektoratu UTP odbył się konkurs krasmówczy dla uczniów z naszego regionu organizowany przez bydgoski oddział English Speaking Union oraz Koło Naukowo-Dyskusyjne Wspólny Język. Do ogólnopolskiego finału zakwalifikowali się Agnieszka Śledzik (I LO Nakło), Jakub Piekut (VII LO Bydgoszcz) (na zdjęciach) oraz Andrzej Chrostowski (VII LO Bydgoszcz), Monika Muszyńska (IX LO Bydgoszcz), Mic...

We show that the extinction of quasar absorbers increases exponentially with the logarithmic column density of any volatile metal (e.g. zinc), with a charateristic turning point above which the quasars are severely dimmed. We derive the relation between extinction, HI column density (NHI), metallicity (Z ≡ NZnII/NHI) and fraction of iron in dust [fFe(Z)] in Damped Lyman α (DLA) systems. We use ...

Let A(t) denote the cluster produced by internal diffusion limited aggregation (internal DLA) with t particles in dimension d ≥ 3. We show that A(t) is approximately spherical, up to an O( √ log t) error. In the process known as internal diffusion limited aggregation (internal DLA) one constructs for each integer time t ≥ 0 an occupied set A(t) ⊂ Zd as follows: begin with A(0) = ∅ and A(1) = {0...

Let each of n particles starting at the origin in Z perform simple random walk until reaching a site with no other particles. Lawler, Bramson, and Griffeath proved that the resulting random set A(n) of n occupied sites is (with high probability) close to a disk Br of radius r = √ n/π. We show that the discrepancy between A(n) and the disk is at most logarithmic in the radius: i.e., there is an ...

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Nitrogen lines of the NI 1134Å and 1200Å multiplets in the Damped Lyα (DLA) galaxies at z abs = 2.309, 2.827 and 3.025 toward the QSOs 0100+1300, 1425+6039 and 0347−3819 respectively, have been detected by means of high resolution spectra (R ∼ 2 × 10 4) obtained with 4-m class telescopes at ESO (La Silla, Chile) and ORM (La Palma, Spain). The two NI multiplets offer a considerable range in osci...

The Doctor of Liberal Arts (DLA) is designed for the experienced adult learner who wishes to pursue rigorous interdisciplinary study along with independent, scholarly reading and research. The degree is designed to cultivate interdisciplinary skills, intellectual habits, analytical and critical reasoning, effective writing, and broad-based decision making. The DLA is primarily for working profe...