831 resultados para WE 344
Resumo:
In this thesis I examine the U.S. foreign policy discussion that followed the war between Russia and Georgia in August 2008. In the politically charged setting that preceded the presidential elections, the subject of the debate was not only Washington's response to the crisis in the Caucasus but, more generally, the direction of U.S. foreign policy after the presidency of George W. Bush. As of November 2010, the reasons for and consequences of the Russia-Georgia war continue to be contested. My thesis demonstrates that there were already a number of different stories about the conflict immediately after the outbreak of hostilities. I want to argue that among these stories one can discern a “neoconservative narrative” that described the war as a confrontation between the East and the West and considered it as a test for Washington’s global leadership. I draw on the theory of securitization, particularly on a framework introduced by Holger Stritzel. Accordingly, I consider statements about the conflict as “threat texts” and analyze these based on the existing discursive context, the performative force of the threat texts and the positional power of the actors presenting them. My thesis suggests that a notion of narrativity can complement Stritzel’s securitization framework and take it further. Threat texts are established as narratives by attaching causal connections, meaning and actorship to the discourse. By focusing on this process I want to shed light on the relationship between the text and the context, capture the time dimension of a speech act articulation and help to explain how some interpretations of the conflict are privileged and others marginalized. I develop the theoretical discussion through an empirical analysis of the neoconservative narrative. Drawing on Stritzel’s framework, I argue that the internal logic of the narrative which was presented as self-evident can be analyzed in its historicity. Asking what was perceived to be at stake in the conflict, how the narrative was formed and what purposes it served also reveals the possibility for alternative explanations. My main source material consists of transcripts of think tank seminars organized in Washington, D.C. in August 2008. In addition, I resort to the foreign policy discussion in the mainstream media.
Resumo:
Research on unit cohesion has shown positive correlations between cohesion and valued outcomes such as strong performance, reduced stress, less indiscipline, and high re-enlistment intentions. However, the correlations have varied in strength and significance. The purpose of this study is to show that taking into consideration the multi-component nature of cohesion and relating the most applicable components to specific outcomes could resolve much of the inconsistency. Unit cohesion is understood as a process of social integration among members of a primary group with its leaders, and with the larger secondary groups of which they are a part. Correspondingly, included in the framework are four bonding components: horizontal (peer) and vertical (subordinate and leader) and organizational and institutional, respectively. The data were collected as part of a larger research project on cohesion, leadership, and personal adjustment to the military. In all, 1,534 conscripts responded to four questionnaires during their service in 2001-2002. In addition, sociometric questionnaires were given to 537 group members in 47 squads toward the end of their service. The results showed that platoons with strong primary-group cohesion differed from other platoons in terms of performance, training quality, secondary-group experiences, and attitudes toward refresher training. On the sociometric level it was found that soldiers who were chosen as friends by others were more likely to have higher expected performance, better performance ratings, more positive attitudes toward military service, higher levels of well-being during conscript service, and fewer exemptions from duty during it. On the group level, the selection of the respondents own group leader rather than naming a leader from outside (i.e., leader bonding) had a bearing not only on cohesion and performance, but also on the social, attitudinal, and behavioral criteria. Overall, the aim of the study was to contribute to the research on cohesion by introducing a model that takes into account the primary foci of bonding and their impact. The results imply that primary-group and secondary-group bonding processes are equally influential in explaining individual and group performance, whereas the secondary-group bonding components are far superior in explaining career intentions, personal growth, avoidance of duty, and attitudes toward refresher training and national defense. This should be considered in the planning and conducting of training. The main conclusion is that the different types of cohesion components have a unique, positive, significant, but varying impact on a wide range of criteria, confirming the need to match the components with the specific criteria.
Resumo:
This paper challenges the Kripkean interpretation of a posteriori necessities. It will be demonstrated, by an analysis of classic examples, that the modal content of supposed a posteriori necessities is more complicated than the Kripkean line suggests. We will see that further research is needed concerning the a priori principles underlying all a posteriori necessities. In the course of this analysis it will emerge that the modal content of a posteriori necessities can be best described in terms of a Finean conception of modality – by giving essences priority over modality. The upshot of this is that we might be able to establish the necessity of certain supposed a posteriori necessities by a priori means.
Resumo:
Tässä tutkielmassa kuvataan tekijöitä, jotka haittaavat naisten toimintaa kunnanvaltuutettuina tehokkaalla tai naisten itsensä haluamalla tavalla sekä vaikuttavat heidän mahdollisuuksiinsa vaikuttaa päätöksentekoon Ghanan paikallishallinnossa. Tutkimuksessa analysoidaan sekä paikallishallintoon nimitettyjen että vaaleilla valittujen naisten asemaa valtuutettuina, mitä aiemmissa tutkimuksissa Ghanan paikallishallinnosta ei ole tehty. Ghanassa nimittäin 30 prosenttia kunnanvaltuutetuista nimitetään tehtäväänsä. Lopulta tutkimuksessa analysoidaan nimitettyjen ja vaaleilla valittujen naisvaltuutettujen mahdollisuuksia edustaa halutessaan naisten intressejä. Hon kunnanvaltuuston tapaus oli erittäin kiinnostava, sillä vuonna 2006 naisten osuus kunnanvaltuutetuista nousi 35,7 prosenttiin. Aiemmin naisia oli ollut valtuustossa huomattavasti vähemmän. Tutkimusta varten tehtiin kenttätyötä Ghanassa. Tutkimus perustuu 16 Hon kunnanvaltuutetun haastatteluun ja kunnan pormestarin kanssa käytyyn keskusteluun. Kartoitan Hon kunnanvaltuuston naisvaltuutettujen toimintaan vaikuttavia tekijöitä ja naisedustajien työssä kohtaamia esteitä sekä naisvaltuutettujen omien kokemusten että miespuolisten kunnanvaltuutettujen näkemysten kautta. Tutkimustulokset osoittivat, että naisvaltuutetut kohtasivat työssään monia haasteita. Moni esteistä oli yhdistettävissä toimimattomiin rakenteisiin, miehisiin normeihin ja käytäntöihin sekä toisaalta naisten miehiä huonompaan sosiaaliseen asemaan. Esimerkiksi liikkuminen vaalialueella ja jopa kokouksiin saapuminen olijoillekin naisille suuri haaste. Myös paikallisten ihmisten vaatimukset saada henkilökohtaista rahallista hyötyä valtuutetuilta nousivat esiin naisten esteenä. Toisaalta näkemysten esittäminen kokouksissa vaikutti naisille ongelmalliselta eli huomio kiinnittyi naisten poliittiseen kokemattomuuteen sekä valtuuston institutionaaliseen kulttuuriin. Nimitettyjen naisten asema kunnanvaltuustossa paljastui erilaiseksi kuin vaaleilla valittujen naisedustajien. Nimitettyjen edustajien järjestelmä, jota on perusteltu mahdollisuutena lisätä naisten intressien edustusta paikallishallinnossa, näyttäytyi tutkimusten tulosten perusteella kyseenalaisena keinona lisätä naisten edustusta paikallishallinnossa. Nimitettyjä valtuutettuja ei esimerkiksi nähty legitiimeinä ihmisten edustajina paikallishallinnossa vaan heidän katsottiin edistävän puolueensa intressejä, ei paikallisten ihmisten. Nimitettyjen edustajien järjestelmä myös paljastui paikalliselle poliittiselle eliitille suosiolliseksi järjestelmäksi valita kiintiön kautta edustajiksi itselleen, ei paikallisille ihmisille tai paikallisille naisille, sopivia edustajia.
Resumo:
Numerous reports from several parts of the world have confirmed that on calm clear nights a minimum in air temperature can occur just above ground, at heights of the order of $\frac{1}{2}$ m or less. This phenomenon, first observed by Ramdas & Atmanathan (1932), carries the associated paradox of an apparently unstable layer that sustains itself for several hours, and has not so far been satisfactorily explained. We formulate here a theory that considers energy balance between radiation, conduction and free or forced convection in humid air, with surface temperature, humidity and wind incorporated into an appropriate mathematical model as parameters. A complete numerical solution of the coupled air-soil problem is used to validate an approach that specifies the surface temperature boundary condition through a cooling rate parameter. Utilizing a flux-emissivity scheme for computing radiative transfer, the model is numerically solved for various values of turbulent friction velocity. It is shown that a lifted minimum is predicted by the model for values of ground emissivity not too close to unity, and for sufficiently low surface cooling rates and eddy transport. Agreement with observation for reasonable values of the parameters is demonstrated. A heuristic argument is offered to show that radiation substantially increases the critical Rayleigh number for convection, thus circumventing or weakening Rayleigh-Benard instability. The model highlights the key role played by two parameters generally ignored in explanations of the phenomenon, namely surface emissivity and soil thermal conductivity, and shows that it is unnecessary to invoke the presence of such particulate constituents as haze to produce a lifted minimum.
Resumo:
Conserving blodiversity has in recent years become a concern of the global elite because of the commercial potential of the emerging biotechnologies. But much of this blodiversity resides In the Third World tropics which are currently being drained of their biological and mineral wealth. This process goes on because the costs of the resultant degradation are entirely passed on to the poor of the Third World countryside who perforce have to depend on resources gathered or produced with their own labour from their surroundings. The elite have always found a substitute whenever a particular resource, or a particular locality, has been exploited to exhaustion. Indeed, given their record, commercial interests are likely to abandon the new found concern for conservation once they acquire control over adequate levels of genetic resources in ex situ storages. Long term conservation of biodiversity must therefore be attempted through empowering and suitably rewarding people of the Third World countryside whose well being is linked to the sustainable use of biological resources and conservation of the biodiversity in their own localities.
Resumo:
This review highlights the physics aspects of soft condensed matter to show that these are novel systems to explore cooperative behaviour in condensed matter under equilibrium and non-equilibrium conditions. A case is made for focusing research in this-area in our country.
Resumo:
The evolution of altruism is the central problem of the evolution of eusociality. The evolution of altruism is most likely to be understood by studying species that show altruism in spite of being capable of ''selfish'' individual reproduction. But the definition of eusociality groups together primitively eusocial species where workers retain the ability to reproduce on their own and highly eusocial species where workers have lost reproductive options. At the same time it separates the primitively eusocial species from semisocial species, species that lack life-time sterility and cooperatively breeding birds and mammals, in most of which, altruism and the associated social life are facultative. The definition of eusociality is also such that it is sometimes difficult to decide,what is eusocial and what is not. I therefore suggest that, (1) we expand the scope of eusociality to include semisocial species, primitively eusocial species, highly eusocial species as well as those cooperatively breeding birds and mammals where individuals give up substantial or all personal reproduction for aiding conspecifics, (2) there should be no requirement of overlap of generations or of life-time sterility and (3) the distinction between primitively and highly eusocial should continue, based on the presence or absence of morphological caste differentiation.
Resumo:
Dipolar systems, both liquids and solids, constitute a class of naturally abundant systems that are important in all branches of natural science. The study of orientational relaxation provides a powerful method to understand the microscopic properties of these systems and, fortunately, there are many experimental tools to study orientational relaxation in the condensed phases. However, even after many years of intense research, our understanding of orientational relaxation in dipolar systems has remained largely imperfect. A major hurdle towards achieving a comprehensive understanding is the long range and complex nature of dipolar interactions which also made reliable theoretical study extremely difficult. These difficulties have led to the development of continuum model based theories, which although they provide simple, elegant expressions for quantities of interest, are mostly unsatisfactory as they totally neglect the molecularity of inter-molecular interactions. The situation has improved in recent years because of renewed studies, led by computer simulations. In this review, we shall address some of the recent advances, with emphasis on the work done in our laboratory at Bangalore. The reasons for the failure of the continuum model, as revealed by the recent Brownian dynamics simulations of the dipolar lattice, are discussed. The main reason is that the continuum model predicts too fast a decay of the torque-torque correlation function. On the other hand, a perturbative calculation, based on Zwanzig's projection operator technique, provides a fairly satisfactory description of the single particle orientational dynamics for not too strongly polar dipolar systems. A recently developed molecular hydrodynamic theory that properly includes the effects of intermolecular orientational pair correlations provides an even better description of the single-particle orientational dynamics. We also discuss the rank dependence of the dielectric friction. The other topics reviewed here includes dielectric relaxation and solvation dynamics, as they are intimately connected with orientational relaxation. Recent molecular dynamics simulations of the dipolar lattice are also discussed. The main theme of the present review is to understand the effects of intermolecular interactions on orientational relaxation. The presence of strong orientational pair correlation leads to a strong coupling between the single particle and the collective dynamics. This coupling can lead to rich dynamical properties, some of which are detailed here, while a major part remains yet unexplored.
Resumo:
Photoemission spectroscopy offers the unique possibility of mapping out the electronic structure of the occupied electron states. However, the extreme surface sensitivity of this technique ensures that only the surface and the near-surface regions of any sample are probed. An important question arises in this context—Is the electronic structure of the surface region the same as that of the bulk? We address this issue using two different series of vanadium oxides, Ca1−xSrxVO3 and La1−xCaxVO3. Our results clearly establish that the electronic structure of the surface region is drastically different from that of the bulk in both these cases. We provide a method to separate the two contributions: one arising from the near-surface region and the other representative of the bulk. This separation allows us to deduce some very unusual behaviors of the electronic structures in these systems.
Resumo:
Ferric uptake regulator (Fur) is a transcriptional regulator controlling the expression of genes involved in iron homeostasis and plays an important role in pathogenesis. Fur-regulated sRNAs/CDSs were found to have upstream Fur Binding Sites (FBS). We have constructed a Positional Weight Matrix from 100 known FBS (19 nt) and tracked the `Orphan' FBSs. Possible Fur regulated sRNAs and CDSs were identified by comparing their genomic locations with the `Orphan' FBSs identified. Thirty-eight `novel' and all known Fur regulated sRNAs in nine proteobacteria were identified. In addition, we identified high scoring FBSs in the promoter regions of the 304 CDSs and 68 of them were involved in siderophore biosynthesis, iron-transporters, two-component system, starch/sugar metabolism, sulphur/methane metabolism, etc. The present study shows that the Fur regulator controls the expression of genes involved in diverse metabolic activities and it is not limited to iron metabolism alone. (C) 2012 Elsevier B.V. All rights reserved.