Large Scale Structures a Gradient Lines: the case of the Trkal Flow

A specific asymptotic expansion at large Reynolds numbers (R)for the long wavelength perturbation of a non stationary anisotropic helical solution of the force less Navier-Stokes equations (Trkal solutions) is effectively constructed of the Beltrami type terms through multi scaling analysis. The asymptotic procedure is proved to be valid for one specific value of the scaling parameter,namely for the square root of the Reynolds number (R).As a result large scale structures arise as gradient lines of the energy determined by the initial conditions for two anisotropic Beltrami flows of the same helicity.The same intitial conditions determine the boundaries of the vortex-velocity tubes, containing both streamlines and vortex linesComment: 27 pages, 2 figure

Lexical pragmatics and types of linguistic encoding: evidence from pre- and postpositions in Behdini-Kurdish

Lexical pragmatics starts from the assumption that the meaning communicated by a word is underdetermined by its semantics, and lexical pragmatists usually study the processes involved in bridging the gap between the encoded and the communicated meaning of words. This paper studies a different but related question: wether different types of linguistic encoding can play empirically distinguishable roles in lexical pragmatics. Carston (2002) suggests that some words may encode templates for concept formation whereas others encode fully-fledged concepts that provide inputs to pragmatic processes. Blakemore (1987) argued that some words encode constraints on inferential processes rather than concepts. But if some words might encode nothing more than concept-formation templates, and others procedural constraints, then both types of words appear to be highly context dependent and their linguistic semantics rather abstract in nature. Is it possible to distinguish these different types of encoding empirically? In this paper I want to argue that the answer to this question is positive. In Behdini-Kurdish, there is a class of four fundamental prepositions *di* 'in', *li* 'at', *ji* 'from', *bi* 'with'. Furthermore, there is a larger class of simple prepositions such as *ser* 'on', *nav* 'within', *ber* 'in front'. These simple prepositions can be added to one of the fundamental prepositions to form compound ones: *diser* 'on top of', *dinav* 'inside', *diber* 'in front of, in sight of'. Any fundamental, simple or compound preposition can be used together with one of three postpositions *da*, *ra* and *ve*. Postpositions are morphologically and syntactically simple, in contrast to prepositions. Though overlapping in meaning with prepositions, they are not redundant. Fundamental prepositions have a wider range of meaning than simple prepositions and compound prepositions. Finally, there are grammaticalisation paths from nouns through compound preposition to simple prepositions, but none involving the postpositions. My thesis is that these properties of the Behdini-Kurdish system of pre-and postpositions can be explained on the assumptions that the class of fundamental prepositions encodes templates for ad-hoc concept construction, the class of simple prepositions encodes concepts that allow the construction of ad-hoc concepts, and that the class of postpositions encode procedures constraining ad-hoc concept construction. This thesis gets additional support from German prepositional phrases. I conclude that the different types of linguistic encoding discussed do indeed lead to distinct effects in lexical pragmatics and are therefore empirically distinguishable. Thus, while there is reason to think that a unified account of the pragmatic processes involved in lexical pragmatics is possible (Wilson, to appear), the different types of inputs to these processes need to be recognised

Theoretical aspects of coping strategies study

In article based on a thorough analysis of classical and modern foreign and domestic literature examines the notion of coping strategies, approaches to the understanding of coping. Theoretically proved that coping is an individual way to interact with the situation according to its own logic, psychological capabilities and its importance in human life, the level of development of coping resources provides a successful adaptation to stress. From the analysis of theoretical literature, we saw that the uncertainty of events to humans might arise from objectively defi ned parameters of the situation and its subjective interpretation that is associated with the personal characteristics of the person, lack of experience or skills in this type of life events. The signifi cance of the research question in a pedagogical context is to help the teenager to better adapt to the demands of the situation, allowing him to possess her, to repay the action stressful situation, creative process and become an active subject

Vol. 7, No. 11, February 14, 1958

•United States Supreme Court Justice William J. Brennan, Jr. •Law Club Post-Exam Dance, Hook Hop •Sessions of the Institute on Advocacy Being Held in Rackham Auditorium •Institute on Modern Frontiers in Selected Fields of Law •Two Visiting Professors Teaching Classes This Semester •Fraternity Social Events •Ten Juniors Were Inducted into the Barristers Society •Fifty-One Completed Work on Law Degrees at the End of the First Semester •Detroit Symphony Orchestra •At the Flick

Luminescence evidence for bulk and surface excitons in free xenon clusters

Cathodoluminescence spectra of free xenon clusters produced by condensation of xenon-argon gas mixtures in supersonic jets expanding into vacuum were studied. By varying initial experimental parameters, including xenon concentration, we could obtain clusters with a xenon core (300-3500 atoms) covered by an argon outer shell as well as shell-free xenon clusters (about 1500 atoms). The cluster size and temperature (about 40 K for both cases) were measured electronographically. Luminescence bands evidencing the existence of bulk and surface excitons were detected for shell-free xenon clusters. The emission from bulk excitons in small clusters is supposed to be due to processes of their multiple elastic reflections from the xenon-vacuum interface. A presence of an argon shell causes extinction of the excitonic bands. In addition, some new bands were found which have no analogs for bulk xenon cryosamples.Comment: The final modified version will be published in Phys. Rev. A 76 (2007

Vol. 7, No. 11, February 14, 1958

•United States Supreme Court Justice William J. Brennan, Jr. •Law Club Post-Exam Dance, Hook Hop •Sessions of the Institute on Advocacy Being Held in Rackham Auditorium •Institute on Modern Frontiers in Selected Fields of Law •Two Visiting Professors Teaching Classes This Semester •Fraternity Social Events •Ten Juniors Were Inducted into the Barristers Society •Fifty-One Completed Work on Law Degrees at the End of the First Semester •Detroit Symphony Orchestra •At the Flick

J Clin Hypertens (Greenwich)

The ability to reliably evaluate the impact of interventions and changes in hypertension prevalence and control is critical if the burden of hypertension-related disease is to be reduced. Previously, a World Hypertension League Expert Committee made recommendations to standardize the reporting of population blood pressure surveys. We have added to those recommendations and also provide modified recommendations from a Pan American Health Organization expert meeting for "performance indicators" to be used to evaluate clinical practices. Core indicators for population surveys are recommended to include: (1) mean systolic blood pressure and (2) mean diastolic blood pressure, and the prevalences of: (3) hypertension, (4) awareness of hypertension, (5) drug-treated hypertension, and (6) drug-treated and controlled hypertension. Core indicators for clinical registries are recommended to include: (1) the prevalence of diagnosed hypertension and (2) the ratio of diagnosed hypertension to that expected by population surveys, and the prevalences of: (3) controlled hypertension, (4) lack of blood pressure measurement within a year in people diagnosed with hypertension, and (5) missed visits by people with hypertension. Definitions and additional indicators are provided. Widespread adoption of standardized population and clinical hypertension performance indicators could represent a major step forward in the effort to control hypertension.CC999999/Intramural CDC HHS/United States2017-06-20T00:00:00Z28191704PMC547694