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New Patterns (new + pattern)
Selected AbstractsNew Patterns of Youth Transition in EducationINTERNATIONAL SOCIAL SCIENCE JOURNAL, Issue 164 2000Johanna Wyn Current research provides evidence that new relationships are being forged between youth people and education. Increased participation in post-compulsory education, combinations of work and study and uncertain career outcomes havebecome common experiences. There is an emerging disparity between the stated goals of education and the changing priorities and choices of young people. In particular, the linear notion of transitions, expressed in the metaphorsof pathways used in policy documents, is increasingly at odds with the patterns of life experienced by young people in many nations. Three themes stand out in the research on young people in the 1990s. First, an awareness of foreclosed options in educational outcomes is a consistent thread across a range of studies. Secondly, there is a discernible shift by the end of the 1990s toward more complex life-patterns and a blending or balancing of a range of personal priorities and interests. Thirdly, the need to give ,active voice' to young people about the dramatic social and economic changes they have been subjected to, is unmistakable in the light of the increasing disparity between the rhetoric of youth and education policy and their own experience of its out-comes. [source] New Patterns in Urban DesignARCHITECTURAL DESIGN, Issue 6 2009Brian McGrath Abstract Brian McGrath and VictoriaMarshall discern the newly resilient urban patterns that are emerging in the meta-city, shifting and adjusting to changing local and global conditions. Based on smart infrastructure, self-sufficiency and hybrid local models, highly adaptive design patterns take the form of responsive micropatches rather than overarching masterplans. As demonstrated by the featured projects, ,pattern recognition', sensory mapping techniques and sensitivity to a city's ecosystem are becoming essential tools to the urban designer. Copyright © 2009 John Wiley & Sons, Ltd. [source] Epineurial compartments and their role in intraneural ganglion cyst propagation: An experimental studyCLINICAL ANATOMY, Issue 7 2007Robert J. Spinner Abstract New patterns of intraneural ganglion cyst formation are emerging that have not previously been explained in current pathoanatomic terms. We believe there are three important elements underlying the appearance of these cysts: (a) an articular branch of the nerve that connects to a nearby synovial joint; (b) ejected synovial fluid following the path of least resistance along tissue planes; and (c) the additional effects of pressure and pressure fluxes. The dynamic nature of cyst formation has become clearly apparent to us in our clinical, operative and pathologic practice, but the precise mechanism underlying the process has not been critically studied. To test our hypothesis that a fibular (peroneal) or tibial intraneural cyst derived from the superior tibiofibular joint could ascend proximally into the sciatic nerve, expand within it and descend into terminal branches of this major nerve, we designed a series of simple, qualitative laboratory experiments in two cadavers (four specimens, six experiments). Injecting dye into the outer or "epifascicular" epineurium of the fibular and the tibial nerves we observed its ascent, cross over and descent patterns in three of three specimens as well as its cross over after an outer epineurial sciatic injection. In contrast, injecting dye into the inner or "interfascicular" epineurium led to its ascent within the tibial nerve and its division within the sciatic nerve in one specimen and lack of cross over in a sciatic nerve injection. Histologic cross-sections of the nerves at varying levels demonstrated a tract of disruption within the outer epineurium of the nerve injected and the nerve(s) into which the dye, after cross over, descended. Those specimens injected in the inner epineurium demonstrated dye within this tract but without disruption of or dye intrusion into the outer epineurium. In no case did the dye pass through the perineurial layers. Coupled with our observations in previous detailed studies, these anatomic findings provide proof of concept that sciatic cross over occurs due to the filling of its common epineurial sheath; furthermore, these findings, support the unifying articular theory, even in cases wherein patterns of intraneural ganglion cyst formation are unusual. Additional work is needed to be done to correlate these anatomic findings with magnetic resonance imaging and surgical pathology. Clin. Anat. 20:826,833, 2007. © 2007 Wiley-Liss, Inc. [source] Influence of parasitism by encyrtid parasitoids on the feeding behaviour of the cassava mealybug Phenacoccus herreniENTOMOLOGIA EXPERIMENTALIS ET APPLICATA, Issue 3 2001P.-A. Calatayud Abstract Three encyrtid parasitoids Apoanagyrus (Epidinocarsis) diversicornis, Aenasius vexans, and Acerophagus coccois (Hymenoptera: Encyrtidae) are used to control the cassava mealybug Phenacoccus herreni Cox & Williams (Sternorrhyncha: Pseudococcidae), an important pest of cassava in South America. The influence of parasitism on the feeding behaviour of mealybugs was studied by observing honeydew secretion and by the electrical penetration graph technique (EPG, DC-system). Honeydew secretions were observed after parasitism until mummy transformation. No strong EPG parameter differences were found between parasitised and control insects. All results indicated that parasitised mealybugs keep feeding on the phloem sap after parasitism until mummy transformation. The main influence of parasitism on EPG parameters is the appearance of a new pattern resembling the E2 pattern at the extracellular level and labelled H. This pattern was also produced with control insects located on an unfavourable feeding site and could be associated with a stress response. It might be related to the still unclear E(c) pattern of aphids. The relationship of H to stylet activities is discussed. [source] The Latinization of the Central Shenandoah ValleyINTERNATIONAL MIGRATION, Issue 1 2008Laura Zarrugh Virginia is among a number of southern states in the United States, such as North Carolina, Arkansas and Georgia, which have experienced a sudden growth in Latino immigration during the past decade. Not only is the volume of growth unprecedented, but many of the destinations are new and located in rural areas. Places that have not hosted immigrant populations for generations are quickly becoming multicultural. The small city of Harrisonburg (population 43,500 according to the 2005 estimate), which is located in the rural Central Shenandoah Valley of Virginia, is perhaps the premier example of this new pattern of change. While local advertising once promoted Harrisonburg for its "99.2% American-born and 93.7% white" population, the area today holds the distinction of hosting the most diverse public school enrollment in the state (in 2006-2007), with students from 64 countries who speak 44 languages. Among them are Spanish speakers from at least 14 different countries. Drawing on social network theory, the paper examines how social networks among Latino immigrants become activated in new settlement areas. It presents a case history of the historic process of "Latinization" involving the settlement of a number of diverse Latino populations (from Mexico, Guatemala, El Salvador, Honduras, Cuba and Uruguay) in Harrisonburg and the surrounding Central Shenandoah Valley. The study demonstrates how a number of key institutions, including local agricultural industries (apples and poultry), a refugee resettlement office and churches recruited "pioneers" from these immigrant groups to the area and how "pioneers" subsequently engaged in further social network recruitment, thus creating multiple transnational "daughter communities" in the Harrisonburg area. The policy implications of this historical process are explored. Au même titre que la Caroline du Nord, l'Arkansas et la Georgie, la Virginie est l'un de ces Etats du sud des Etats-Unis qui ont été témoins d'une poussée soudaine de l'immigration latino-américaine au cours de la dernière décennie. Non seulement il s'agit d'un rythme de croissance sans précédent, mais bon nombre de destinations choisies sont nouvelles et situées en zone rurale. Des lieux qui n'avaient pas accueilli de population immigrée depuis des générations prennent brusquement un caractère multiculturel. La petite ville de Harrisonburg (43 500 habitants selon un décompte approximatif de 2005), qui est située dans la vallée centrale de Shenandoah, en Virginie, est peut-être le principal exemple de cette nouvelle évolution. Alors qu'elle se vantait autrefois d'être composée d'Américains de souche à hauteur de 99,2% et d'être blanche à 93,7%, cette ville se distingue aujourd'hui par la plus grande diversité d'origine des enfants scolarisés à l'échelle de l'Etat (pour la période 2006-2007), puisqu'on y dénombre 64 nationalités parlant 44 langues. On y trouve notamment des hispanophones originaires d'au moins 14 pays différents. A partir de la théorie des réseaux sociaux, l'auteur examine comment ces réseaux se sont activés chez les immigrants latino-américains dans les nouvelles zones d'installation. Il présente un historique du processus de "latinisation", en citant notamment l'installation de populations latino-américaines diverses (originaires du Mexique, du Guatemala, d'El Salvador, du Honduras, de Cuba et d'Uruguay) à Harrisonburg et dans la vallée centrale Shenandoah entourant cette ville. L'auteur montre comment un certain nombre d'institutions clés, et notamment les industries agricoles locales (pommeraies et élevages de poulets), un bureau de réinstallation de réfugiés et des églises ont recruté des "pionniers" au sein de ces groupes d'immigrants, et comment ces "pionniers" ont par la suite poursuivi cette action de recrutement à l'aide de réseaux sociaux, créant ainsi de multiples "communautés affiliées" transnationales dans la région de Harrisonburg. L'étude examine aussi les implications politiques de ce processus historique. Virginia es uno de los estados sureños de los Estados Unidos, al igual que Carolina del Norte, Arkansas y Georgia, que ha experimentado un incremento repentino de la inmigración latina durante el último decenio. No sólo se trata de un incremento sin precedentes, si no que además los destinos son nuevos y localizados en zonas rurales. Estos lugares que no han albergado a poblaciones inmigrantes durante generaciones se están convirtiendo rápidamente en entornos multiculturales. La pequeña ciudad de Harrisonburg (con 43.500 habitantes según el censo de 2005), está localizada en el valle rural central de Shenadoah en Virginia, y es quizás el primer ejemplo de este nuevo patrón de cambio. Si bien la publicidad local promocionaba a Harrisonburg porque sus habitantes eran "99,2 por ciento nacidos en América y 93,7 por ciento blancos" hoy en día se destaca por albergar la población más diversa inscrita en los colegios públicos del Estado (entre 2006 y 2007), con estudiantes provenientes de 64 países que hablan 44 idiomas. Entre ellos están estudiantes de habla hispana provenientes de por lo menos 14 países distintos. Sobre la base de la teoría de redes sociales, este artículo examina redes sociales entre los inmigrantes latinos que se activan en nuevas zonas de asentamiento. Se presenta un estudio por caso de un proceso histórico de "latinización" que implica el asentamiento de toda una variedad de poblaciones latinas de "México, Guatemala, El Salvador, Honduras, Cuba y Uruguay" en Harrisonburg y el valle central aledaño de Shenandoah. El estudio demuestra cómo una serie de instituciones clave,- incluidas las industrias agrícolas locales (manzanos y avicultura), una oficina de reasentamiento de refugiados y las iglesias - reclutaron a los "pioneros" de estos grupos de inmigrantes en la región y cómo esos "pioneros" entablaron ulteriormente el reclutamiento a nivel de su red social, creando "comunidades hermanas" transnacionales y múltiples en la región de Harrisonburg. También se examinan las repercusiones políticas de este proceso histórico. [source] Prevalence of the mutational pattern E44D/A and/or V118I in the reverse transcriptase (RT) gene of HIV-1 in relation to treatment with nucleoside analogue RT inhibitorsJOURNAL OF MEDICAL VIROLOGY, Issue 3 2002Brigitte Montes Abstract It has been reported that a new pattern of mutations, E44D/A and/or V118I, in the reverse transcriptase (RT) gene of HIV-1 confers a moderate level of resistance to lamivudine in the absence of the M184V mutation. The prevalence of this mutational pattern was studied in HIV-1 isolates obtained from 280 patients. These mutations were not identified in the RT sequences from 23 antiretroviral-naive patients but were detected in 82 (31.9%) of the 257 RT sequences obtained from nucleoside reverse transcriptase inhibitors (NRTI)-experienced patients. Mutation at codon 44 was identified in 41 patients (7 mutations E44A and 34 mutations E44D), mutation V118I was identified in 73 patients and a combination of mutations at codons 44 and 118 was found in 32 patients. Multivariate analysis showed an association between the E44D/A and/or V118I mutational pattern and the RT mutations D67N, T69D, L210W, and T215Y/F. No relationship was observed between this mutational pattern and the lamivudine-specific resistance mutation M184V. The prevalence of these mutations increased significantly with the number of drug regimens experienced and a prevalence of 42.4% was observed in patients who had received ,,4 antiretroviral regimens. A relationship was found between the E44D/A and/or V118I mutational pattern and experience with didanosine or stavudine but not with lamivudine. The results suggest that the development of the E44D/A and/or V118I mutational pattern is frequent in patients treated with NRTIs. Thymidine analogues and didanosine, but not lamivudine, could promote the development of these mutations. J. Med. Virol. 66:299-303, 2002. © 2002 Wiley-Liss, Inc. [source] Developmental Changes in Effect of Cytokinin and Gibberellin on Shoot K+ and Na+ Accumulation in Salt-Treated Sorghum PlantsPLANT BIOLOGY, Issue 4 2001G. N. Amzallag Abstract: The effect of cytokinin (CK) and/or gibberellin (GA) treatments on shoot accumulation of Na+ and K+ was investigated in Sorghum bicolor exposed to 150 mM NaCl. These hormonal treatments modified the shoot content of Na+ and K+, but the effect varied throughout development. Comparison of ion concentration versus ion content in shoots indicates that regulation of shoot concentration of K+ is modified during a transition period of development. This change is concomitant with reorganization of the regulation network for meristem activity, an event also involving changes in sensitivity to CK and GA. This evidence suggests a strong interdependency between dynamic changes in a between-organ network of relations and control of accumulation of monovalent ions in the shoot. Moreover, a new pattern of regulation of shoot Na+ concentration emerges during the transition period. During this process GA appears progressively involved in regulation of Na retranslocation, while CK is rather controlling the root uptake of Na+. Accordingly, the spontaneous emergence of Na-includer and Na-excluder individuals observed from an initially homogeneous population is interpreted as related to variations in sensitivity to GA and CK during differentiation of this newly emerging pathway of regulation. [source] Comparison of stone handling behavior in two macaque species: implications for the role of phylogeny and environment in primate cultural variationAMERICAN JOURNAL OF PRIMATOLOGY, Issue 12 2008Charmalie AD Nahallage Abstract This study describes the stone handling (SH) behavior of captive rhesus macaques and compares it with that of a captive troop of Japanese macaques with reference to the relative contributions of phylogeny-driven behavioral propensities, environmental differences and socially facilitated learning to the formation of culture. These systematically collected data demonstrate for the first time that two closely related macaque species might share a common cultural behavior, SH. The rhesus troop displayed SH behavioral patterns that was already described in Japanese macaque troops. The one exception was a new pattern not yet seen in any Japanese macaque troop. Differences in the physical environment of the two study enclosures may be responsible for some of the variation in observed SH behavioral patterns in these two troops. These data support the idea that environmental factors can be important for the formation of cultural variation, when the key materials needed to perform the behavior are present in both habitats (stones). Our results are consistent with the prediction made by Huffman and Hirata [The biology of tradition: Models and evidence. Cambridge: Cambridge University Press. p 267,296] that an interactive triad of phylogenetic, environmental and social factors can be responsible for the formation of cultural variation in primates. Am. J. Primatol. 70:1124,1132, 2008. © 2008 Wiley-Liss, Inc. [source] Seat belt injury to the female breast: review and discussion of its surgical managementANZ JOURNAL OF SURGERY, Issue 1-2 2010Alenka M. Paddle Abstract With the use of the three-point lap,diagonal seat belt restraint, there has been a reduction in the number of deaths caused by automobile trauma. However, a new pattern of injury has emerged, the ,seat-belt syndrome', which comprises a constellation of injuries including soft tissue injury to the breast. Given that seat belt legislation is becoming more widespread, it is likely that the incidence and reporting of these injuries will become more common. In this paper, we provide an overview of the varied clinical and radiological presentations, and suggested management of seat belt injury to the female breast. The consequences of such injury can be severe in their functional, psychosocial and aesthetic impact, and thus, using an index case as an example, the previously unreported area of breast reconstruction in a breast deformed as a result of blunt trauma is discussed, highlighting some of its challenges. [source] A new pattern of cytosine-arabinoside-induced lung toxicityBRITISH JOURNAL OF HAEMATOLOGY, Issue 5 2009Karine Chagnon First page of article [source] Patterns of intraneural ganglion cyst descentCLINICAL ANATOMY, Issue 3 2008Robert J. Spinner Abstract On the basis of the principles of the unifying articular theory, predictable patterns of proximal ascent have been described for fibular (peroneal) and tibial intraneural ganglion cysts in the knee region. The mechanism underlying distal descent into the terminal braches of the fibular and tibial nerves has not been previously elucidated. The purpose of this study was to demonstrate if and when cyst descent distal to the articular branch-joint connection occurs in intraneural ganglion cysts to understand directionality of intraneural cyst propagation. In Part I, the clinical records and MRIs of 20 consecutive patients treated at our institution for intraneural ganglion cysts (18 fibular and two tibial) arising from the superior tibiofibular joint were retrospectively analyzed. These patients underwent cyst decompression and disconnection of the articular branch. Five of these patients developed symptomatic cyst recurrence after cyst decompression without articular branch disconnection which was done elsewhere prior to our intervention. In Part II, five additional patients with intraneural ganglion cysts (three fibular and two tibial) treated at other institutions without disconnection of the articular branch were compared. These patients in Parts I and II demonstrated ascent of intraneural cyst to differing degrees (12 had evidence of sciatic nerve cross-over). In addition, all of these patients demonstrated previously unrecognized MRI evidence of intraneural cyst extending distally below the level of the articular branch to the joint of origin: cyst within the proximal most portions of the deep fibular and superficial fibular branches in fibular intraneural ganglion cysts and descending tibial branches in tibial intraneural ganglion cysts. The patients in Part I had complete resolution of their cysts at follow-up MRI examination 1 year postoperatively. The patients in Part II had intraneural recurrences postoperatively within the articular branch, the parent nerve, and the terminal branches, although in three cases they were subclinical. The authors demonstrate that cyst descent distal to the take-off of the articular branch to the joint of origin occurs regularly in patients with fibular and tibial intraneural ganglion cysts. The authors believe that parent terminal branch descent follows ascent up the articular branch from an affected joint of origin. This mechanism for bidirectional flow explains cyst within terminal branches of the fibular and tibial nerves and is dependent on pressure fluxes and resistances. This new pattern is consistent with principles previously described in a unified (articular) theory, is generalizable to other intraneural ganglion cysts arising from joints, and has important implications for pathogenesis and treatment of these intraneural cysts. Clin. Anat. 21:233,245, 2008. © 2008 Wiley-Liss, Inc. [source] Extracting new patterns for cardiovascular disease prognosisEXPERT SYSTEMS, Issue 5 2009Luis Mena Abstract: Cardiovascular diseases constitute one of the main causes of mortality in the world, and machine learning has become a powerful tool for analysing medical data in the last few years. In this paper we present an interdisciplinary work based on an ambulatory blood pressure study and the development of a new classification algorithm named REMED. We focused on the discovery of new patterns for abnormal blood pressure variability as a possible cardiovascular risk factor. We compared our results with other classification algorithms based on Bayesian methods, decision trees, and rule induction techniques. In the comparison, REMED showed similar accuracy to these algorithms but it has the advantage of being superior in its capacity to classify sick people correctly. Therefore, our method could represent an innovative approach that might be useful in medical decision support for cardiovascular disease prognosis. [source] The Vulnerability Cycle: Working With Impasses in Couple TherapyFAMILY PROCESS, Issue 3 2004Michele Scheinkman CSW In this article, we propose the vulnerability cycle as a construct for understanding and working with couples' impasses. We expand the interactional concept of couples' reciprocal patterns to include behavioral and subjective dimensions, and articulate specific processes that trigger and maintain couples' entanglements. We consider the vulnerability cycle as a nexus of integration in which "vulnerabilities" and "survival positions" are key ideas that bring together interactional, sociocultural, intrapsychic, and intergenerational levels of meaning and process. The vulnerability cycle diagram is presented as a tool for organizing information. We suggest a therapeutic approach for deconstructing couples' impasses and facilitating new patterns through deliberate modes of questioning, a freeze-frame technique, stimulation of calmness and reflection, separating present from past, and elicitation of alternative meanings, behaviors, empathy, and choice. This approach encourages the therapist and couple to work collaboratively in promoting change and resilience. [source] Identifying infection-associated genes of Candida albicans in the postgenomic eraFEMS YEAST RESEARCH, Issue 5 2009Duncan Wilson Abstract The human pathogenic yeast Candida albicans can cause an unusually broad range of infections reflecting a remarkable potential to adapt to various microniches within the human host. The exceptional adaptability of C. albicans is mediated by rapid alterations in gene expression in response to various environmental stimuli and this transcriptional flexibility can be monitored with tools such as microarrays. Using such technology it is possible to (1) capture a genome-wide portrait of the transcriptome that mirrors the environmental conditions, (2) identify known genes, signalling pathways and transcription factors involved in pathogenesis, (3) identify new patterns of gene expression and (4) identify previously uncharacterized genes that may be associated with infection. In this review, we describe the molecular dissection of three distinct stages of infections, covering both superficial and invasive disease, using in vitro, ex vivo and in vivo infection models and microarrays. [source] The Experience of Gender Change in Public Sector OrganizationsGENDER, WORK & ORGANISATION, Issue 5 2006Raewyn Connell The state has a twofold relationship to gender change in society, through its overall steering capacity and through the gendered character of its constituent agencies. It is therefore important to understand the experience of gender change in state organizations. The findings from a study of gender relations in ten public-sector worksites in New South Wales, Australia are presented. There is a widespread consciousness of gender change linked with new labour processes, restructuring and new patterns of management. These changes are uneven and limits to change are visible. Gender is recognized as an organizational problem in specific circumstances, most visibly where men's resistance to change appears. A number of mechanisms limit the consciousness of gender as a problem. Several trends, including the current strength of neo-liberalism, converge to make the gender-neutral workplace the principal goal of gender reform in the public-sector workplace. This, however, limits the state's steering capacity in regard to societal gender relations. [source] Changing Internal Governance: A Discussion of Leadership Roles and Management Structures in UK UniversitiesHIGHER EDUCATION QUARTERLY, Issue 4 2004Robin MiddlehurstArticle first published online: 13 DEC 200 A series of reviews over the past six years , from Dearing (NCIHE, 1997) to Lambert (Lambert, 2003) , have addressed the question of whether the structure and process of ,governance' in higher education is fit for modern times. This is a proper question to ask as operating environments change and pressures on institutional resources increase. Indeed, it is not coincidental that both the recent government-sponsored reports and those of the previous decade (Jarratt, 1985; NAB, 1987) were associated with significant financial changes in the sector. There are further parallels in that both the reports of the 1980s and those of the later period heralded legislative changes that produced , or will produce , new patterns of higher education provision in the UK (Education Reform Act, 1988; Further and Higher Education Act, 1992; Higher Education Act, 2004). The messages from the reports and White Papers (DES, 1987; DES, 1991; DfES, 2003) published in this twenty-year period have remained broadly similar, even though the wider environment has altered significantly. ,Increase efficiency, find new sources of income and improve performance across an ever-widening range of activities and services' have been the watchwords of successive governments. Given the consistency of the message, it is useful to analyse the changes that universities have been making to meet these requirements and to consider what further changes may be needed in the light of new external challenges. The first part of the paper offers a historical perspective before addressing the evolution of leadership roles and management structures from the late 1980s. The second part considers some of the current drivers of internal and external change before discussing the kind of changes in internal governance that are emerging and that should be considered for the future. I conclude by arguing for a shift in focus from structure and roles to people and processes in the task of leading change in universities. [source] Scottish Higher Education and the FE-HE NexusHIGHER EDUCATION QUARTERLY, Issue 4 2003Brenda Morgan-Klein Over half of Scottish higher education entrants in 2000/01 began their studies in further education. This reflects the growing diversity of higher education in Scotland as a result of institutional change and trends in policy and practice. While these changes have been constructed positively as contributing to the accessibility of Scottish higher education, clear differences between HE provision in the two sectors and sectoral differentiation in patterns of participation have given rise to two relatively disconnected systems of higher education. The emergence of parallel systems may conceal new patterns of inequality, giving rise to a new learning divide. [source] A single-trace dual-process model of episodic memory: A novel computational account of familiarity and recollectionHIPPOCAMPUS, Issue 2 2010Andrea Greve Abstract Dual-process theories of episodic memory state that retrieval is contingent on two independent processes: familiarity (providing a sense of oldness) and recollection (recovering events and their context). A variety of studies have reported distinct neural signatures for familiarity and recollection, supporting dual-process theory. One outstanding question is whether these signatures reflect the activation of distinct memory traces or the operation of different retrieval mechanisms on a single memory trace. We present a computational model that uses a single neuronal network to store memory traces, but two distinct and independent retrieval processes access the memory. The model is capable of performing familiarity and recollection-based discrimination between old and new patterns, demonstrating that dual-process models need not to rely on multiple independent memory traces, but can use a single trace. Importantly, our putative familiarity and recollection processes exhibit distinct characteristics analogous to those found in empirical data; they diverge in capacity and sensitivity to sparse and correlated patterns, exhibit distinct ROC curves, and account for performance on both item and associative recognition tests. The demonstration that a single-trace, dual-process model can account for a range of empirical findings highlights the importance of distinguishing between neuronal processes and the neuronal representations on which they operate. © 2009 Wiley-Liss, Inc. [source] United Kingdom and Ireland precipitation variability and the North Atlantic sea-level pressure fieldINTERNATIONAL JOURNAL OF CLIMATOLOGY, Issue 8 2001Sarah J. Murphy Abstract The relationship between UK and Ireland (UK&I) precipitation variability and the North Atlantic sea-level pressure (SLP) field is examined. Strong positive correlations between the North Atlantic Oscillation (NAO) and precipitation in the northwest of the UK&I, particularly in winter, are confirmed but correlations are insignificant at the 0.05 level in the southeast during all months. This paper identifies new patterns of SLP associated with precipitation variability both for regions and months where precipitation variability is not strongly linked with the NAO and for patterns that appear to be more closely related to UK&I precipitation than the NAO. Two indices of monthly UK&I precipitation variability are calculated using empirical orthogonal functions (EOFs) of monthly UK&I precipitation anomalies. EOF1 represents precipitation variability for the UK&I as a whole and EOF2 the variability in the north,south precipitation gradient across the UK&I. Correlations between both these monthly EOF derived precipitation indices and SLP show a north,south (sub-tropical/mid-latitude) dipole, which is particularly strong in winter. These correlation patterns are then used to construct new SLP indices, which necessarily relate more closely to UK&I precipitation. The first index resembles the East Atlantic pattern from September to April. The second may be thought of as an alternative index of the NAO, such that it is optimized with respect to precipitation variability and is located northeast of those centres of action most commonly used to calculate the NAO index. Stepwise linear regression models, incorporating the two new indices and the original NAOI, suggest that over 25% of UK&I precipitation variability this century (1900,1994) in each month can be explained by a simple index representation of the North Atlantic SLP field. This rises to over 40% of variance explained in nearly all regions of the UK&I. Copyright © 2001 Royal Meteorological Society [source] Precarious Work and Economic Migration: Emerging Immigrant Divisions of Labour in Greater London's Service SectorINTERNATIONAL JOURNAL OF URBAN AND REGIONAL RESEARCH, Issue 1 2009LINDA MCDOWELL The aim of this article is to assess the connections between the continued expansion of forms of insecure work and the impact of rising numbers of economic migrants employed in UK labour markets. It shows how competition between foreign-born workers for jobs in the UK is currently being recast by changes in the jobs available, in forms of precarious labour market attachment and by new patterns of migration into the UK since EU expansion in 2004. The article documents the ways in which migrants with different sets of social characteristics (nationality, gender and skin colour) and different sets of legal entitlements (legal citizenship, EU membership and entitlement to residence) are differentially placed in their competition for some of the poorest jobs in the British economy, drawing on an empirical study of the migrant divisions of labour emerging in two significant sectors in the service industries. It concludes by arguing that new and deeper divisions are emerging between foreign-born workers in the UK. Résumé Cet article vise àévaluer les rapports entre l'essor constant de formes de travail précaire et l'impact des migrants économiques en nombre croissant employés sur les marchés du travail britanniques. La concurrence entre les travailleurs d'origine étrangère pour des emplois au Royaume-Uni subit actuellement une mutation du fait de l'évolution des postes disponibles, sous des formes d'intégration précaire au marché du travail et selon de nouveaux modèles d'immigration depuis l'élargissement de l'UE en 2004. À partir d'une étude empirique sur les divisions du travail qui se dessinent chez les migrants dans deux importants secteurs de l'industrie des services, l'article met en évidence les manières dont les migrants réunissant différentes caractéristiques sociales (nationalité, genre et couleur de peau) et différentes habilitations légales (citoyenneté, ressortissant de l'UE et droit de séjour) se placent différemment dans la compétition pour certains des postes les plus médiocres de l'économie britannique. Il apparaît en conclusion que des divisions nouvelles et plus profondes apparaissent entre les travailleurs d'origine étrangère au Royaume-Uni. [source] Think Locally, Act Globally: Toward a Transnational Comparative Politics,INTERNATIONAL POLITICAL SOCIOLOGY, Issue 2 2010Terrence Lyons Political dynamics and outcomes around the globe have been transformed by globalization, new patterns of human mobility, and the development of innovative transnational social networks. These new political processes are rooted in communities and networks that are not restricted by geographic location. Although politics has been delinked from territory in this way with regard to processes and actors, this does not mean that transnational politics focuses exclusively on universal issues or global approaches to social justice. Rather much of the new transnational politics is intensely focused on specific locations, identities, and issues (for example, "globalized" neighborhood associations, ethnicities, patrimonialism). Transnational politics also includes new conceptions and practices of citizenship and accountability (for example, legislative seats reserved for expatriate labor migrants) as the body politic becomes increasing mobile, political affinities delinked from geographic proximity, and critical constituencies reside outside of the territory of the state. This article outlines a new approach to investigating the actors and processes at the heart of contemporary transnational politics, with a particular focus on the ways in which diasporas are strategically constructed and mobilized to advance political goals through the use of salient symbols, identity frames, and social networks. [source] Czech Social Reform after 1989: Concepts and RealityINTERNATIONAL SOCIAL SECURITY REVIEW, Issue 2-3 2001Martin Pot The goal of this paper is twofold: to present a description of the most important institutional changes taking place in Czech social policy after 1989, and to offer the explanation of these changes in a broader cultural, economic and political framework. The significant economic, social and cultural conditions of the country, in which social policy operates, comprise the disposable economic resources, the concept and realization of economic reform including changes in ownership rights, the capacity of public administration, the way political democratization is designed and implemented, and political priorities and concepts of the political elite actually in power. Recent developments in the labour market and the new patterns of employment policy are discussed in more detail. After that, the incidence of poverty and the ongoing social and economic stratification are associated with the new approaches to the construction of a social security system which has been composed of three main tiers (or "pillars"): social insurance, state social support, and social assistance. As a conclusion, the sensitive points of the present state of Czech social policy, along with crucial decisions to be taken in the future, are identified. [source] Political Consequences of the New InequalityINTERNATIONAL STUDIES QUARTERLY, Issue 3 2001Craig N. Murphy This article proposes agendas for teaching and research about shifting global patterns of equality and inequality, a very different agenda than was appropriate when the last undergraduate professor was president of ISA, almost forty years ago. Today, unlike in that Cold War world, formal democracy is flourishing, state power is diminishing, gender inequality has diminished, and income inequality has risen. Consequences of these new patterns that demand our attention as teachers and scholars include: (1) more frequent protracted social conflicts, (2) a newly politicized sphere of international public health, (3) the new global gender politics, (4) the new global politics of the super-rich, and (5) the new politics and ethics of the world's privileged, a group that includes most ISA members and most of our students. Our responsibilities as teachers have grown, in part, because popular media present a decreasingly coherent picture of each of these patterns; and that incoherence, itself, may help sustain global inequalities. [source] Complex patterns of mitochondrial dynamics in human pancreatic cells revealed by fluorescent confocal imagingJOURNAL OF CELLULAR AND MOLECULAR MEDICINE, Issue 1-2 2010Andrey V. Kuznetsov Abstract Mitochondrial morphology and intracellular organization are tightly controlled by the processes of mitochondrial fission,fusion. Moreover, mitochondrial movement and redistribution provide a local ATP supply at cellular sites of particular demands. Here we analysed mitochondrial dynamics in isolated primary human pancreatic cells. Using real time confocal microscopy and mitochondria-specific fluorescent probes tetramethylrhodamine methyl ester and MitoTracker Green we documented complex and novel patterns of spatial and temporal organization of mitochondria, mitochondrial morphology and motility. The most commonly observed types of mitochondrial dynamics were (i) fast fission and fusion; (ii) small oscillating movements of the mitochondrial network; (iii) larger movements, including filament extension, retraction, fast (0.1,0.3 ,m/sec.) and frequent oscillating (back and forth) branching in the mitochondrial network; (iv) as well as combinations of these actions and (v) long-distance intracellular translocation of single spherical mitochondria or separated mitochondrial filaments with velocity up to 0.5 ,m/sec. Moreover, we show here for the first time, a formation of unusual mitochondrial shapes like rings, loops, and astonishingly even knots created from one or more mitochondrial filaments. These data demonstrate the presence of extensive heterogeneity in mitochondrial morphology and dynamics in living cells under primary culture conditions. In summary, this study reports new patterns of morphological changes and dynamic motion of mitochondria in human pancreatic cells, suggesting an important role of integrations of mitochondria with other intracellular structures and systems. [source] Coupled axial,radial segregation in rotating drums with high fill levelsAICHE JOURNAL, Issue 7 2006H. P. Kuo Axial segregation and radial segregation within the granular bed in a rotating drum with a fill level > 50% were experimentally investigated. The axial segregated patterns and the radial segregated patterns were coupled within the bed, resulting in observation of new segregated patterns at the plane along the rotational shaft. The segregated patterns are different from the previous axial band and radial core patterns and show coupled new patterns, including the "cross" patterns, the "band-core-in-core" patterns, and other geometric patterns. The new segregation patterns are strong functions of the fill level and the rotational speed of the drum. The formation of the axial,radial coupled patterns was attributed to the fill level, the free flowing surface of the bed. A virtual drum hypothesis is proposed to explain the formation of the complex segregated patterns. © 2006 American Institute of Chemical Engineers AIChE J, 2006 [source] Patterning by genetic networksMATHEMATICAL METHODS IN THE APPLIED SCIENCES, Issue 2 2006S. Genieys Abstract We consider here the morphogenesis (pattern formation) problem for some genetic network models. First, we show that any given spatio-temporal pattern can be generated by a genetic network involving a sufficiently large number of genes. Moreover, patterning process can be performed by an effective algorithm. We also show that Turing's or Meinhardt's type reaction,diffusion models can be approximated by genetic networks. These results exploit the fundamental fact that the genes form functional units and are organized in blocks. Due to this modular organization, the genes always are capable to construct any new patterns and even any time sequences of new patterns from old patterns. Computer simulations illustrate some analytical results. Copyright © 2005 John Wiley & Sons, Ltd. [source] Factors Affecting How Second Language Spanish Students Derive Meaning from ContextMODERN LANGUAGE JOURNAL, Issue 2 2003Diana Frantzen Although first language (L1) and second language (L2) research has indicated that the meanings of unknown words can be derived from the contexts in which they occur, research has also found limitations to the value of context. Using data gathered in a classroom experiment on L2 vocabulary acquisition (Frantzen, 1998), the present study sought to determine some of the reasons why the context in which a word appears does not always lead a language learner to an accurate interpretation of its meaning. It expands the existing research by using a natural, intact, unmanipulated text as the context (an aspect underrepresented in current L2 word inferencing literature). Analysis of the students' answers, their self,reported guessing strategies, the contexts in which the words appeared, and the text's glossing revealed that the "blame" for the incorrect answers may be placed on: (a) the context itself, (b) the students' behavior, and in a minor way (c) the story's glossing. Numerous patterns are presented and discussed in light of other L1 and L2 research and new patterns are reported. [source] Derivational Morphological Analysis as a Strategy for Vocabulary Acquisition in SpanishMODERN LANGUAGE JOURNAL, Issue 2 2003Regina Morin Although first language (L1) and second language (L2) research has indicated that the meanings of unknown words can be derived from the contexts in which they occur, research has also found limitations to the value of context. Using data gathered in a classroom experiment on L2 vocabulary acquisition (Frantzen, 1998), the present study sought to determine some of the reasons why the context in which a word appears does not always lead a language learner to an accurate interpretation of its meaning. It expands the existing research by using a natural, intact, unmanipulated text as the context (an aspect underrepresented in current L2 word inferencing literature). Analysis of the students' answers, their self,reported guessing strategies, the contexts in which the words appeared, and the text's glossing revealed that the "blame" for the incorrect answers may be placed on: (a) the context itself, (b) the students' behavior, and in a minor way (c) the story's glossing. Numerous patterns are presented and discussed in light of other L1 and L2 research and new patterns are reported. [source] Hidden patterns of colony size variation in seabirds: a logarithmic point of viewOIKOS, Issue 12 2008Roger Jovani Explaining the huge variability present in bird colony sizes within and between species is intimately related to the understanding of the proximate and ultimate reasons for bird coloniality. However, natural patterns of colony size frequency distributions (CSFDs) remain poorly known. It is widely believed that colonial birds have similar long-tailed (highly right-skewed) CSFDs and that species mainly differ in their maximum colony sizes (in the length of the ,tail' of their CSFDs). We used data from the Seabird 2000 project (20 species; 19 978 colonies; 3 779 919 nests), the largest and most detailed dataset currently available, to analyse the CSFDs of seabird breeding in Britain and Ireland. Log-transformations of colony sizes revealed that the often reported long-tailed CSFDs in common histograms were hiding contrasting patterns, mainly log-normal but also power law CSFDs. The different statistical characteristics of CSFDs did not co-occur at random within species and were in fact highly correlated (e.g. a large geometric mean correlated with a large coefficient of variation). A PCA with these characteristics revealed a smoothed transition between species' CSFD. Therefore, (a) a logarithmic analysis will allow different aspects of what is currently only referred to as ,colony size variation' to be quantified; (b) we challenge the current idea that all species show similar long-tailed CSFDs; (c) we offer a new (unified) view of colony size variation and discuss how these new patterns confirm, challenge and may advance theoretical and applied research into bird coloniality. [source] The Use and Evolution of Stories as a Mode of Problem Representation: Soviet and French Military Officers Face the Loss of EmpirePOLITICAL PSYCHOLOGY, Issue 4 2000Tanya Charlick-Paley Experimental work on modes of problem representation (Sylvan, Diascro, & Haddad, 1996) has found that the story model of Pennington and Hastie (1986, 1988) is a helpful construct in understanding how people reach decisions when dealing with questions of foreign policy. Here, a modified version of the story model is applied to statements by military officers in the Soviet Union and in France, representing the situations they face before and after the loss of Eastern Europe and Indochina, respectively (Charlick-Paley, 1997). Both baseline stories and those after the losses of empire are examined to test the hypothesis that when a military experiences the loss of its state's empire, officers will formulate a new story that justifies the change in its status, and that this new story will motivate new patterns of civil-military relations in the post-imperial era. The hypothesis finds general support, and stories are found to be a useful vehicle in understanding differences between groups of military officers. An analysis of how officers' stories change over time yields intriguing results as to how mutable stories are and which elements of a story are most likely to change first. In particular, expansion of the level of a goal is found to be a representational response to the political stimulus of loss of empire. [source] | |||||||||||||||||||||||||||||||