ПРОФЕСІЙНА ПІДГОТОВКА СТУДЕНТІВ-ІНОЗЕМЦІВ У МЕДИЧНИХ УНІВЕРСИТЕТАХ УКРАЇНИ

In the article the analysis of professional peculiarities of training foreign students in medical universities of Ukraine is shown, political, economic and humanitarian aspects of the provision of educational services to foreigners is found out. The process of adaptation of foreign students is considered as a background for improving the quality of knowledge and difficulties associated with it, the necessity of finding new forms and methods in educational work with foreign students is indicated, the main tasks facing each higher educational institution in the training of foreign students are identified. It is focused on the main problems which a foreign student usually faces with when studying in medical schools, directions for adaptation of foreign citizens in Ukraine are suggested.У статті представлено аналіз особливостей  професійної підготовки іноземних студентів у медичних університетах України, з’ясовано  політичний, економічний та гуманітарний аспекти надання освітянських послуг іноземним громадянам. Розглядається процес адаптації іноземних студентів як передумова підвищення якості знань та труднощі, пов’язані з ним, вказано на необхідність пошуку нових форм та методів у навчально-виховній роботі з іноземними студентами, виокремлено головні завдання, які стоять перед кожним вищим навчальним закладом при підготовці іноземних студентів, зосереджено увагу на основних проблемах, з якими зустрічається іноземний студент при навчанні у вищих медичних закладах, запропоновано напрями адаптації іноземних громадян в Україні

Exotic smooth structures and symplectic forms on closed manifolds

We give a short proof of the (known) result that there are no Kaehler structures on exotic tori. This yields a negative solution to a problem posed by Benson and Gordon. W discuss the symplectic version of the problem and analyze results which yield an evidence for the conjecture that there are no symplectic structures on exotic tori.Comment: AMSLaTeX, 16 pages, a new version. A survey of the symplectic version of the problem is adde

Hysteresis, Avalanches, and Disorder Induced Critical Scaling: A Renormalization Group Approach

We study the zero temperature random field Ising model as a model for noise and avalanches in hysteretic systems. Tuning the amount of disorder in the system, we find an ordinary critical point with avalanches on all length scales. Using a mapping to the pure Ising model, we Borel sum the $6-\epsilon$ expansion to $O(\epsilon^5)$ for the correlation length exponent. We sketch a new method for directly calculating avalanche exponents, which we perform to $O(\epsilon)$. Numerical exponents in 3, 4, and 5 dimensions are in good agreement with the analytical predictions.Comment: 134 pages in REVTEX, plus 21 figures. The first two figures can be obtained from the references quoted in their respective figure captions, the remaining 19 figures are supplied separately in uuencoded forma

Evidence That Two ATP-Dependent (Lon) Proteases in Borrelia burgdorferi Serve Different Functions

The canonical ATP-dependent protease Lon participates in an assortment of biological processes in bacteria, including the catalysis of damaged or senescent proteins and short-lived regulatory proteins. Borrelia spirochetes are unusual in that they code for two putative ATP-dependent Lon homologs, Lon-1 and Lon-2. Borrelia burgdorferi, the etiologic agent of Lyme disease, is transmitted through the blood feeding of Ixodes ticks. Previous work in our laboratory reported that B. burgdorferi lon-1 is upregulated transcriptionally by exposure to blood in vitro, while lon-2 is not. Because blood induction of Lon-1 may be of importance in the regulation of virulence factors critical for spirochete transmission, the clarification of functional roles for these two proteases in B. burgdorferi was the object of this study. On the chromosome, lon-2 is immediately downstream of ATP-dependent proteases clpP and clpX, an arrangement identical to that of lon of Escherichia coli. Phylogenetic analysis revealed that Lon-1 and Lon-2 cluster separately due to differences in the NH2-terminal substrate binding domains that may reflect differences in substrate specificity. Recombinant Lon-1 manifested properties of an ATP-dependent chaperone-protease in vitro but did not complement an E. coli Lon mutant, while Lon-2 corrected two characteristic Lon-mutant phenotypes. We conclude that B. burgdorferi Lons -1 and -2 have distinct functional roles. Lon-2 functions in a manner consistent with canonical Lon, engaged in cellular homeostasis. Lon-1, by virtue of its blood induction, and as a unique feature of the Borreliae, may be important in host adaptation from the arthropod to a warm-blooded host