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Selected AbstractsLife events and hemodynamic stress reactivity in the middle-aged and elderlyPSYCHOPHYSIOLOGY, Issue 3 2005Douglas Carroll Abstract Recent versions of the reactivity hypothesis, which consider it to be the product of stress exposure and exaggerated hemodynamic reactions to stress that confers cardiovascular disease risk, assume that reactivity is independent of the experience of stressful life events. This assumption was tested in two substantial cohorts, one middle-aged and one elderly. Participants had to indicate from a list of major stressful life events up to six they had experienced in the previous 2 years. They were also asked to rate how disruptive and stressful they were, at the time of occurrence and now. Blood pressure and pulse rate were measured at rest and in response to acute mental stress. Those who rated the events as highly disruptive at the time of exposure and now exhibited blunted systolic blood pressure reactions to acute stress. The present results suggest that acute stress reactivity may not be independent of stressful life events experience. [source] Modeling memory and perceptionCOGNITIVE SCIENCE - A MULTIDISCIPLINARY JOURNAL, Issue 3 2003Richard M. Shiffrin Abstract I present a framework for modeling memory, retrieval, perception, and their interactions. Recent versions of the models were inspired by Bayesian induction: We chose models that make optimal decisions conditioned on a memory/perceptual system with inherently noisy storage and retrieval. The resultant models are, fortunately, largely consistent with my models dating back to the 1960s, and are therefore natural successors. My recent articles have presented simplified models in order to focus on particular applications. This article takes a larger perspective and places the individual models in a more global framework. I will discuss (1) the storage of episodic traces, the accumulation of these into knowledge (e.g., lexical/semantic traces in the case of words), and the changes in knowledge caused by learning; (2) the retrieval of information from episodic memory and from general knowledge; (3) decisions concerning storage, retrieval, and responding. Examples of applications include episodic recognition and cued and free recall, perceptual identification (naming, yes,no and forced-choice), lexical decision, and long-term and short-term priming. [source] The listener's temperament and perceived tempo and loudness of musicEUROPEAN JOURNAL OF PERSONALITY, Issue 8 2009Joanna Kantor-MartynuskaArticle first published online: 8 JUL 200 Abstract The relationship between the listener's temperament and perceived magnitude of tempo and loudness of music was studied using the techniques of magnitude production, magnitude estimation scaling and cross-modal matching. Four piano pieces were presented at several levels of tempo and loudness. In Study 1, participants adjusted tempo and loudness of music to their subjective level of comfort. In Study 2, participants estimated these parameters on a numerical scale and matched the length of a line segment to the estimates of these musical features. The results showed significant correlations of selected aspects of perceived tempo with perseveration and endurance as well as of selected aspects of perceived loudness with endurance and emotional reactivity. Perceived tempo and loudness, as measured by magnitude production and cross-modal matching tasks, do not seem to systematically correlate with the six formal characteristics of behaviour distinguished in the most recent version of the Regulative Theory of Temperament (RTT). Additionally, there is some evidence that they are selectively associated with reactivity and activity, the dimensions of a previous version of the RTT. The study extends the methodology of research on music preferences and the stimulatory value of music. Copyright © 2009 John Wiley & Sons, Ltd. [source] Solute and Heat Transport Model of the Henry and Hilleke Laboratory ExperimentGROUND WATER, Issue 5 2010Christian D. Langevin SEAWAT is a coupled version of MODFLOW and MT3DMS designed to simulate variable-density ground water flow and solute transport. The most recent version of SEAWAT, called SEAWAT Version 4, includes new capabilities to represent simultaneous multispecies solute and heat transport. To test the new features in SEAWAT, the laboratory experiment of Henry and Hilleke (1972) was simulated. Henry and Hilleke used warm fresh water to recharge a large sand-filled glass tank. A cold salt water boundary was represented on one side. Adjustable heating pads were used to heat the bottom and left sides of the tank. In the laboratory experiment, Henry and Hilleke observed both salt water and fresh water flow systems separated by a narrow transition zone. After minor tuning of several input parameters with a parameter estimation program, results from the SEAWAT simulation show good agreement with the experiment. SEAWAT results suggest that heat loss to the room was more than expected by Henry and Hilleke, and that multiple thermal convection cells are the likely cause of the widened transition zone near the hot end of the tank. Other computer programs with similar capabilities may benefit from benchmark testing with the Henry and Hilleke laboratory experiment. [source] A new GROMOS force field for hexopyranose-based carbohydratesJOURNAL OF COMPUTATIONAL CHEMISTRY, Issue 13 2005Roberto D. Lins Abstract A new parameter set (referred to as 45A4) is developed for the explicit-solvent simulation of hexopyranose-based carbohydrates. This set is compatible with the most recent version of the GROMOS force field for proteins, nucleic acids, and lipids, and the SPC water model. The parametrization procedure relies on: (1) reassigning the atomic partial charges based on a fit to the quantum-mechanical electrostatic potential around a trisaccharide; (2) refining the torsional potential parameters associated with the rotations of the hydroxymethyl, hydroxyl, and anomeric alkoxy groups by fitting to corresponding quantum-mechanical profiles for hexopyranosides; (3) adapting the torsional potential parameters determining the ring conformation so as to stabilize the (experimentally predominant) 4C1 chair conformation. The other (van der Waals and nontorsional covalent) parameters and the rules for third and excluded neighbors are taken directly from the most recent version of the GROMOS force field (except for one additional exclusion). The new set is general enough to define parameters for any (unbranched) hexopyranose-based mono-, di-, oligo- or polysaccharide. In the present article, this force field is validated for a limited set of monosaccharides (,- and ,-D-glucose, ,- and ,-D-galactose) and disaccharides (trehalose, maltose, and cellobiose) in solution, by comparing the results of simulations to available experimental data. More extensive validation will be the scope of a forthcoming article. © 2005 Wiley Periodicals, Inc. J Comput Chem 26: 1400,1412, 2005 [source] Fighting governmental corruption: the New World Bank programme evaluatedJOURNAL OF INTERNATIONAL DEVELOPMENT, Issue 4 2004Carolien M. Klein Haarhuis Over the past decade, the international donor community has come up with a range of initiatives to curb governmental corruption in developing countries. Top-down approaches devise administrative and judicial reforms, whereas bottom-up approaches deal with the process of awareness,raising in civil society. The World Bank currently integrates these top-down and bottom-up approaches in a combined anti-corruption programme. In this paper, the most recent version of this World Bank's training programme is reconstructed and assessed. Several core approaches in the programme, such as the strengthening of civil society and the privatisation of parastatals, turn out to have unintended consequences. The empirical support is largely case-specific and turns out to be highly conditional. It is concluded that indicators need to be developed to assess the relevance of national anti-corruption policies to country-specific governance and anti-corruption conditions. Copyright © 2004 John Wiley & Sons, Ltd. [source] The assimilation of SSM/I and TMI rainfall rates in the ECMWF 4D-Var systemTHE QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Issue 606 2005Jean-françois Mahfouf Abstract A recent version of the European Centre for Medium-Range Weather Forecasts four-dimensional variational (4D-Var) assimilation system (40 km horizontal resolution with a 12-hour window) is used to examine the comparative impact of including satellite-derived rainfall rates from SSM/I and TMI radiometers within the tropics. The methodology is similar to the one proposed by Marécal and Mahfouf (2002) where Total Column Water Vapour (TCWV) retrievals in rainy areas from a simplified 1D-Var assimilation are introduced in the 4D-Var system. An improved methodology for the estimation of rain rate retrieval errors proposed by Bauer et al. (2002) is used. Three one-month experiments are undertaken: a control run (no rain rate assimilation), a TMI run (assimilation of TMI-derived rain rates) and a SSM/I run (assimilation of SSM/I-derived rain rates). The corrections of TCWV in rainy areas introduced in the 4D-Var are very similar between SSM/I and TMI because they are dominated by the ,no rain' information. The impact of TMI and SSM/I assimilations is positive on forecast scores, both in the extratropics and in the tropics. Results from the SSM/I run show a larger positive impact which tends to demonstrate the benefit of the increased number of data from the SSM/I with respect to TMI. Copyright © 2005 Royal Meteorological Society. [source] Subjects: Grammatical Relations, Grammatical Functions and Functional CategoriesLINGUISTICS & LANGUAGE COMPASS (ELECTRONIC), Issue 9 2010Ileana Paul This paper presents an overview of how the notion of ,subject' has been defined in linguistic theory. Although the term developed out of Artistotelian logic, its use has been narrowed to refer to the grammatical relation (or function). Over the past 50 years, the definition of subject and its universality have been the source of much debate. Broadly Chomskian approaches claim that grammatical relations such as subject are not primitives of the grammar and can be derived from phrase structure. As such, testing for the subject involves constituency tests (more recent versions of Chomskian syntax, however, abstract away from constituency). Other approaches (Relational Grammar, Lexical-Function Grammar) posit grammatical relations as primitives of the grammar that are not necessarily related to constituency. And at the other extreme, certain linguists argue that subjects are not found in all languages and therefore the notion is not one of interest (e.g. Role and Reference Grammar). This paper reviews the various analyses of subjects and considers in some detail how the notion of subject has evolved within the Chomskian framework. [source] CAUSAL REFUTATIONS OF IDEALISMTHE PHILOSOPHICAL QUARTERLY, Issue 240 2010Andrew Chignell In the ,Refutation of Idealism' chapter of the first Critique, Kant argues that the conditions required for having certain kinds of mental episodes are sufficient to guarantee that there are ,objects in space' outside us. A perennially influential way of reading this compressed argument is as a kind of causal inference: in order for us to make justified judgements about the order of our inner states, those states must be caused by the successive states of objects in space outside us. Here I consider the best recent versions of this reading, and argue that each suffers from apparently fatal flaws. [source] | |||||||||||||