Stationary reflection principles and two cardinal tree properties

We study consequences of stationary and semi-stationary set reflection. We show that the semi stationary reflection principle implies the Singular Cardinal Hypothesis, the failure of weak square principle, etc. We also consider two cardinal tree properties introduced recently by Weiss and prove that they follow from stationary and semi stationary set reflection augmented with a weak form of Martin's Axiom. We also show that there are some differences between the two reflection principles which suggest that stationary set reflection is analogous to supercompactness whereas semi-stationary set reflection is analogous to strong compactness.Comment: 19 page

Eastern Europeans in Contemporary Literature and Culture:Imagining New Europe

This timely volume provides the first comprehensive study of the way in which contemporary writers, filmmakers and the media have represented the recent phenomenon of Eastern European migration to the UK and Western Europe following the enlargement of the EU in the 21st century, the social and political changes after the fall of communism, and the Brexit vote. Exploring the recurring figures of Eastern Europeans as a new reservoir of cheap labour, the author engages with a wide range of both mainstream and neglected authors, films and programmes, including Rose Tremain, John Lanchester, Marina Lewycka, Polly Courtney, Dubravka Ugresic, Kapka Kassabova, Kwame Kwei-Armah, It's a Free World, Gypo, Britain's Hardest Workers, The Poles are Coming and Czech Dream. Analyzing the treatment of Eastern Europeans as builders, fruit pickers, nannies and victims of sex trafficking, and ways of resisting the stereotypes, this is an important intervention into debates about Europe, migration, and post-communist transition to capitalism, as represented in multiple contemporary cultural texts

OCA and automorphisms of P(ω) ⧸ fin

AbstractLet OCA denote the Open Coloring Axiom. We show that OCA+MAℵ1 implies that P(ω)⧸fin and P(ω1)/fin have only trivial automorphisms. Under PFA for any infinite cardinal κ all automorphisms of P(κ)⧸fin are trivial

On Indestructible Strongly Guessing Models

In \cite{MV} we defined and proved the consistency of the principle ${\rm GM}^+(\omega_3,\omega_1)$ which implies that many consequences of strong forcing axioms hold simultaneously at $\omega_2$ and $\omega_3$. In this paper we formulate a strengthening of ${\rm GM}^+(\omega_3,\omega_1)$ that we call ${\rm SGM}^+(\omega_3,\omega_1)$. We also prove, modulo the consistency of two supercompact cardinals, that ${\rm SGM}^+(\omega_3,\omega_1)$ is consistent with ZFC. In addition to all the consequences of ${\rm GM}^+(\omega_3,\omega_1)$, the principle ${\rm SGM}^+(\omega_3,\omega_1)$, together with some mild cardinal arithmetic assumptions that hold in our model, implies that any forcing that adds a new subset of $\omega_2$ either adds a real or collapses some cardinal. This gives a partial answer to a question of Abraham \cite{AvrahamPhD} and extends a previous result of Todor\v{c}evi\'{c} \cite{Todorcevic82} in this direction

Acute Stroke Multimodal Imaging: Present and Potential Applications toward Advancing Care.

In the past few decades, the field of acute ischemic stroke (AIS) has experienced significant advances in clinical practice. A core driver of this success has been the utilization of acute stroke imaging with an increasing focus on advanced methods including multimodal imaging. Such imaging techniques not only provide a richer understanding of AIS in vivo, but also, in doing so, provide better informed clinical assessments in management and treatment toward achieving best outcomes. As a result, advanced stroke imaging methods are now a mainstay of routine AIS practice that reflect best practice delivery of care. Furthermore, these imaging methods hold great potential to continue to advance the understanding of AIS and its care in the future. Copyright © 2017 by Thieme Medical Publishers, Inc

Uloga i značaj centara za genetsko unapređenje u očuvanju i održivom korišćenju ribljeg fonda salmonida

Cilj ovog rada je da ukaže na potrebu znatno većeg učešća naučno zasnovanih principa u procesu poribljavanja salmonidnih ribolovnih voda na području Srbije. Rad ukazuje na potrebu za izgradnjom i unapređenjem objekata za uzgoj riblje mlađi u kojima će se ona proizvoditi u adekvatnim uslovima, odgovarajućim biotehnološkim procesima i bez genetičke kontaminacije. Rezultati rada dobijeni su na osnovu proučavanja podataka o poribljavanju ribolovnih voda koji su prikazani u Programima upravljanja ribarskim područjima na teritoriji Srbije. Kao primer uzeta su područja u zaštićenim oblastima kao što su: Nacionalni park “Kopaonik”, Park prirode “Stara planina” i Predeo izuzetnih odlika “Vlasina”. Dosadašnja praksa poribljavanja voda u Srbiji neadekvatnom ribljom mlađi doprinela je narušavanju prirodne ravnoteže i potiskivanju autohtonih vrsta riba što se odrazilo na potencijal ribolovnih voda, kako u biološkom tako i ekonomskom smislu. Do poboljšanja bi moglo da dođe ukoliko bi se u Srbiji proizvodila kvalitetna riblja mlađ u dovoljnim količinama u centrima za reprodukciju (reprocentrima). Reprocentri za razliku od postojećih ribnjačkih mrestilišta obezbeđuju riblju mlađ koja je adekvatna za ekosisteme koji se poribljavaju. Osnovne razlike između reprocentara i ribnjaka jesu što reprocentri uzgajaju ribu sa proverenim genetskim poreklom i što na odgovarajući način pripremaju riblju mlađ za život u prirodi