Home About us Contact
|
Home About us Contact | ||
|
|
||
Considerable Detail (considerable + detail)
Selected AbstractsCLOSE RELATIONSHIPS RESEARCH: A RESOURCE FOR COUPLE AND FAMILY THERAPISTSJOURNAL OF MARITAL AND FAMILY THERAPY, Issue 1 2004Susan S. Hendrick This article describes the relatively new field of close relationships research, offering a representative list of topics studied by relationships reseachers. Some of the common interests shared by both close relationships reseachers and couple and family therapists are described, with theshared emphasis on relationships as an anchor for both fields. Some representative love theories are discussed, and Love Styles theory and research are presented in considerable detail. A clinicalcase example indicates how love styles research may be employed to advantage by couple therapists, and the utility of other close relationships theories and measures for therapy is briefly discussed. [source] Autoinduction and signal transduction in the regulation of staphylococcal virulenceMOLECULAR MICROBIOLOGY, Issue 6 2003Richard P. Novick Summary The accessory genes of Staphylococcus aureus, in-cluding those involved in pathogenesis, are controlled by a complex regulatory network that includes at least four two-component systems, one of which, agr, is a quorum sensor, an alternative sigma factor and a large set of transcription factors, including at least two of the superantigen genes, tst and seb. These regulatory genes are hypothesized to act in a time- and population density-dependent manner to integrate signals received from the external environment with the internal metabolic machinery of the cell, in order to achieve the production of particular subsets of accessory/virulence factors at the time and in quantities that are appropriate to the needs of the organism at any given location. From the standpoint of pathogenesis, the regulatory agenda is presumably tuned to particular sites in the host organism. To address this hypothesis, it will be necessary to understand in considerable detail the regulatory interactions among the organism's numerous controlling systems. This review is an attempt to integrate a large body of data into the beginnings of a model that will hopefully help to guide research towards a full-scale test. [source] Mediating Among Scientists: A Mental Model of Expert PracticeNEGOTIATION AND CONFLICT MANAGEMENT RESEARCH, Issue 4 2009Kenneth Kressel Abstract Despite the considerable research on mediator behavior, the cognitive structures and processes that presumably guide the strategic and tactical choices of professional mediators are poorly understood. The current study made use of a reflective case study method to explore in considerable detail the strategic thinking of five experienced mediators. The project was conducted at the National Institutes of Health whose Office of the Ombudsman (OO) mediates disputes among the institute's scientists. Eighteen cases were studied. The thinking of the mediators in these cases displayed regularities that are described in terms of the ombuds team's working mental model of mediation. The mental model consists of two strongly contrasting intervention scripts: a deep problem-solving script (DPS) focused on identifying and addressing latent issues of an interpersonal or systemic kind and a tactical problem-solving script (TPS) focusing instead on the issues as presented by the parties. The tactical script was applied in either an integrative bargaining mode or a more distributive quasi-arbitration approach. The choice of which script to follow in a given case is determined by first order decision rules concerning the existence and nature of any latent problems that may be present, and second order decision rules concerning the parties' capacity to engage in "deep" problem-solving. Despite their very different foci, both DPS and TPS appear to follow the same metascript of problem-solving stages, beginning with an intensive diagnostic phase during which the decision rules are applied and a script "selection" is made. DPS is the preferred intervention mode of team members. Every case began with at least a preliminary effort to search for and address latent causes, and team members expressed dissatisfaction if they could not apply DPS in cases where latent problems were thought to be fueling the conflict. However, ombudsmen used the scripts flexibly and switched to TPS if DPS was unnecessary or impractical. Both scripts produced agreements that were useful to the parties and to the institution's scientific purposes, particularly the fostering of scientific competence. The mental model is heavily shaped by the social context in which the ombudsmen function. Thus, the primacy of DPS in the model appears to be due to the fact that the ombudsmen are "repeat players" in the life of the NIH and therefore in a position to become adept at recognizing the latent sources of its dysfunctional conflicts, are under a strong role mandate as ombudsmen to pay attention to covert patterns of organizational dysfunction, and deal with disputants pressed to address latent issues blocking scientific work. [source] Mapping the Timing, Pace, and Scale of the Fertility Transition in BrazilPOPULATION AND DEVELOPMENT REVIEW, Issue 2 2010Joseph E. Potter Between 1960 and 2000, fertility fell sharply in Brazil, but this transition was unevenly distributed in space and time. Using Bayesian spatial statistical methods and microdata from five censuses, we develop and apply a procedure for fitting logistic curves to the fertility transitions in more than 500 small regions of Brazil over this 40-year period. Doing so enables us to map the main features of the Brazilian fertility transition in considerable detail. We detect early declines in some regions of the country and document large differences between early and late transitions in regard to both the initial level of fertility and the speed of the transition. We also use our results to test hypotheses regarding changes in the level of development at the onset of the fertility transition and identify a temporary stall in the Brazilian transition that occurred in the late 1990s. A web site with project details is at http://schmert.net/BayesLogistic. [source] Prediction-based estimating functionsTHE ECONOMETRICS JOURNAL, Issue 2 2000Michael Sørensen A generalization of martingale estimating functions is presented which is useful when there are no natural or easily calculated martingales that can be used to construct a class of martingale estimating functions. An estimating function of the new type, which is based on linear predictors, is called a prediction-based estimating functions. Special attention is given to classes of prediction-based estimating functions given by a finite-dimensional space of predictors. It is demonstrated that such a class of estimating functions has most of the attractive properties of martingale estimating functions. In particular, a simple expression is found for the optimal estimating function. This type of prediction-based estimating functions only involve unconditional moments, in contrast to the martingale estimating functions where conditional moments are required. Thus, for applications to discretely observed continuous time models, a considerably smaller amount of simulation is, in general, needed for these than for martingale estimating functions. This is also true of the optimal prediction-based estimating functions. Conditions are given that ensure the existence, consistency and asymptotic normality of the corresponding estimators. The new method is applied to inference for sums of Ornstein,Uhlenbeck-type processes and stochastic volatility models. Stochastic volatility models are studied in considerable detail. It is demonstrated that for inference about models by Hull and White and Chesney and Scott, an explicit optimal prediction-based estimating function can be found so that no simulations are needed. [source] The Arabidopsis TALE homeobox gene ATH1 controls floral competency through positive regulation of FLCTHE PLANT JOURNAL, Issue 5 2007Marcel Proveniers Summary Floral induction is controlled by a plethora of genes acting in different pathways that either repress or promote floral transition at the shoot apical meristem (SAM). During vegetative development high levels of floral repressors maintain the Arabidopsis SAM as incompetent to respond to promoting factors. Among these repressors, FLOWERING LOCUS C (FLC) is the most prominent. The processes underlying downregulation of FLC in response to environmental and developmental signals have been elucidated in considerable detail. However, the basal induction of FLC and its upregulation by FRIGIDA (FRI) are still poorly understood. Here we report the functional characterization of the ARABIDOPSIS THALIANA HOMEOBOX 1 (ATH1) gene. A function of ATH1 in floral repression is suggested by a gradual downregulation of ATH1 in the SAM prior to floral transition. Further evidence for such a function of ATH1 is provided by the vernalization-sensitive late flowering of plants that constitutively express ATH1. Analysis of lines that differ in FRI and/or FLC allele strength show that this late flowering is caused by upregulation of FLC as a result of synergism between ATH1 overexpression and FRI. Lack of ATH1, however, results in attenuated FLC levels independently of FRI, suggesting that ATH1 acts as a general activator of FLC expression. This is further corroborated by a reduction of FLC -mediated late flowering in fca-1 and fve-1 autonomous pathway backgrounds when combined with ath1. Since other floral repressors of the FLC clade are not significantly affected by ATH1, we conclude that ATH1 controls floral competency as a specific activator of FLC expression. [source] An easterly tip jet off Cape Farewell, Greenland.THE QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Issue 645 2009I: Aircraft observations Abstract An easterly tip jet event off Cape Farewell, Greenland, is described and analysed in considerable detail. In Part I of this study (this paper) comprehensive aircraft-based observations are described, while in Part II of this study numerical simulations and a dynamical analysis are presented. The easterly tip jet of 21 February 2007 took place during the Greenland Flow Distortion experiment. It resulted through the interaction of a barotropic synoptic-scale low pressure system in the central North Atlantic and the high topography of southern Greenland. In situ observations reveal a jet core at the coast with peak winds of almost 50 m s,1, about 600,800 m above the sea surface, and of 30 m s,1 at 10 m. The depth of the jet increased with wind speed from ,1500 m to ,2500 m as the peak winds increased from 30 to 50 m s,1. The jet accelerated and curved anticyclonically as it reached Cape Farewell and the end of the barrier. The easterly tip jet was associated with a tongue of cold and dry air along the coast of southeast Greenland, general cloud cover to the east, and cloud streets to the south of Cape Farewell. Precipitation was observed during the low-level components of the flight. The very high wind speeds generated a highly turbulent atmospheric boundary layer and resulted in some of the highest surface wind stresses ever observed over the ocean. Copyright © 2009 Royal Meteorological Society [source] Conductance of inhomogeneous systems: Real-time dynamicsANNALEN DER PHYSIK, Issue 9 2010A. Branschädel Numerical time evolution of transport states using time dependent Density Matrix Renormalization Group (td-DMRG) methods has turned out to be a powerful tool to calculate the linear and finite bias conductance of interacting impurity systems coupled to non-interacting one-dimensional leads. Several models, including the Interacting Resonant Level Model (IRLM), the Single Impurity Anderson Model (SIAM), as well as models with different multi site structures, have been subject of investigations in this context. In this work we give an overview of the different numerical approaches that have been successfully applied to the problem and go into considerable detail when we comment on the techniques that have been used to obtain the full I,V-characteristics for the IRLM. Using a model of spinless fermions consisting of an extended interacting nanostructure attached to non-interacting leads, we explain the method we use to obtain the current,voltage characteristics and discuss the finite size effects that have to be taken into account. We report results for the linear and finite bias conductance through a seven site structure with weak and strong nearest-neighbor interactions. Comparison with exact diagonalisation results in the non-interacting limit serve as a verification of the accuracy of our approach. Finally we discuss the possibility of effectively enlarging the finite system by applying damped boundaries and give an estimate of the effective system size and accuracy that can be expected in this case. [source] | ||||||||||||||||